Home / 687,487.98-1,031,216.13-404,970.74

Finding the Fourth Proportional to 687,487.98, 1,031,216.13 and 404,970.74

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Solution

The fourth proportional to 687,487.98, 1,031,216.13 and 404,970.74 is: 607,446.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,487.98 : 1,031,216.13 = 404,970.74 : x
  2. Step 2: Convert to fraction form
    687,487.98/1,031,216.13 = 404,970.74/x
  3. Step 3: Cross multiply
    687,487.98x = 1,031,216.13 × 404,970.74
  4. Step 4: Simplify right side
    687,487.98x = 417,612,354,109.96
  5. Step 5: Solve for x
    x = 417,612,354,109.96/687,487.98
  6. Step 6: Final answer
    x = 607,446.77

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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.