Home / 653,929.20-980,887.32-387,497.79

Finding the Fourth Proportional to 653,929.20, 980,887.32 and 387,497.79

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Solution

The fourth proportional to 653,929.20, 980,887.32 and 387,497.79 is: 581,242.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,929.20 : 980,887.32 = 387,497.79 : x
  2. Step 2: Convert to fraction form
    653,929.20/980,887.32 = 387,497.79/x
  3. Step 3: Cross multiply
    653,929.20x = 980,887.32 × 387,497.79
  4. Step 4: Simplify right side
    653,929.20x = 380,091,668,739.02
  5. Step 5: Solve for x
    x = 380,091,668,739.02/653,929.20
  6. Step 6: Final answer
    x = 581,242.85

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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.