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Finding the Fourth Proportional to 498,215.70, 747,323.55 and 338,783.40

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Solution

The fourth proportional to 498,215.70, 747,323.55 and 338,783.40 is: 508,175.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,215.70 : 747,323.55 = 338,783.40 : x
  2. Step 2: Convert to fraction form
    498,215.70/747,323.55 = 338,783.40/x
  3. Step 3: Cross multiply
    498,215.70x = 747,323.55 × 338,783.40
  4. Step 4: Simplify right side
    498,215.70x = 253,180,813,169.07
  5. Step 5: Solve for x
    x = 253,180,813,169.07/498,215.70
  6. Step 6: Final answer
    x = 508,175.10

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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.