Home / 738,380.10-1,107,570.15-402,456.90

Finding the Fourth Proportional to 738,380.10, 1,107,570.15 and 402,456.90

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Solution

The fourth proportional to 738,380.10, 1,107,570.15 and 402,456.90 is: 603,685.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,380.10 : 1,107,570.15 = 402,456.90 : x
  2. Step 2: Convert to fraction form
    738,380.10/1,107,570.15 = 402,456.90/x
  3. Step 3: Cross multiply
    738,380.10x = 1,107,570.15 × 402,456.90
  4. Step 4: Simplify right side
    738,380.10x = 445,749,249,101.54
  5. Step 5: Solve for x
    x = 445,749,249,101.54/738,380.10
  6. Step 6: Final answer
    x = 603,685.35

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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.