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Finding the Fourth Proportional to 738,382.60, 1,107,573.90 and 402,459.40

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Solution

The fourth proportional to 738,382.60, 1,107,573.90 and 402,459.40 is: 603,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,382.60 : 1,107,573.90 = 402,459.40 : x
  2. Step 2: Convert to fraction form
    738,382.60/1,107,573.90 = 402,459.40/x
  3. Step 3: Cross multiply
    738,382.60x = 1,107,573.90 × 402,459.40
  4. Step 4: Simplify right side
    738,382.60x = 445,753,527,249.66
  5. Step 5: Solve for x
    x = 445,753,527,249.66/738,382.60
  6. Step 6: Final answer
    x = 603,689.10

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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.