Home / 687,618.20-1,031,864.70-403,308.20

Finding the Fourth Proportional to 687,618.20, 1,031,864.70 and 403,308.20

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Solution

The fourth proportional to 687,618.20, 1,031,864.70 and 403,308.20 is: 605,218.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,618.20 : 1,031,864.70 = 403,308.20 : x
  2. Step 2: Convert to fraction form
    687,618.20/1,031,864.70 = 403,308.20/x
  3. Step 3: Cross multiply
    687,618.20x = 1,031,864.70 × 403,308.20
  4. Step 4: Simplify right side
    687,618.20x = 416,159,494,800.54
  5. Step 5: Solve for x
    x = 416,159,494,800.54/687,618.20
  6. Step 6: Final answer
    x = 605,218.85

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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.