Home / 712,230.80-1,068,346.20-642,246.80

Finding the Fourth Proportional to 712,230.80, 1,068,346.20 and 642,246.80

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Solution

The fourth proportional to 712,230.80, 1,068,346.20 and 642,246.80 is: 963,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,230.80 : 1,068,346.20 = 642,246.80 : x
  2. Step 2: Convert to fraction form
    712,230.80/1,068,346.20 = 642,246.80/x
  3. Step 3: Cross multiply
    712,230.80x = 1,068,346.20 × 642,246.80
  4. Step 4: Simplify right side
    712,230.80x = 686,141,928,242.16
  5. Step 5: Solve for x
    x = 686,141,928,242.16/712,230.80
  6. Step 6: Final answer
    x = 963,370.20

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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.