Home / 739,031.76-1,019,864.16-399,500.10

Finding the Fourth Proportional to 739,031.76, 1,019,864.16 and 399,500.10

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Solution

The fourth proportional to 739,031.76, 1,019,864.16 and 399,500.10 is: 551,310.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,031.76 : 1,019,864.16 = 399,500.10 : x
  2. Step 2: Convert to fraction form
    739,031.76/1,019,864.16 = 399,500.10/x
  3. Step 3: Cross multiply
    739,031.76x = 1,019,864.16 × 399,500.10
  4. Step 4: Simplify right side
    739,031.76x = 407,435,833,906.42
  5. Step 5: Solve for x
    x = 407,435,833,906.42/739,031.76
  6. Step 6: Final answer
    x = 551,310.32

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.