Home / 687,767.40-1,031,651.10-501,143.40

Finding the Fourth Proportional to 687,767.40, 1,031,651.10 and 501,143.40

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Solution

The fourth proportional to 687,767.40, 1,031,651.10 and 501,143.40 is: 751,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,767.40 : 1,031,651.10 = 501,143.40 : x
  2. Step 2: Convert to fraction form
    687,767.40/1,031,651.10 = 501,143.40/x
  3. Step 3: Cross multiply
    687,767.40x = 1,031,651.10 × 501,143.40
  4. Step 4: Simplify right side
    687,767.40x = 517,005,139,867.74
  5. Step 5: Solve for x
    x = 517,005,139,867.74/687,767.40
  6. Step 6: Final answer
    x = 751,715.10

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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.