Home / 1,255,321,870.80-1,882,982,806.20-393,677,480.40

Finding the Fourth Proportional to 1,255,321,870.80, 1,882,982,806.20 and 393,677,480.40

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Solution

The fourth proportional to 1,255,321,870.80, 1,882,982,806.20 and 393,677,480.40 is: 590,516,220.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255,321,870.80 : 1,882,982,806.20 = 393,677,480.40 : x
  2. Step 2: Convert to fraction form
    1,255,321,870.80/1,882,982,806.20 = 393,677,480.40/x
  3. Step 3: Cross multiply
    1,255,321,870.80x = 1,882,982,806.20 × 393,677,480.40
  4. Step 4: Simplify right side
    1,255,321,870.80x = 741,287,926,781,337,472
  5. Step 5: Solve for x
    x = 741,287,926,781,337,472/1,255,321,870.80
  6. Step 6: Final answer
    x = 590,516,220.60

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.