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Finding the Fourth Proportional to 656,854, 985,649.88 and 357,355.48

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Solution

The fourth proportional to 656,854, 985,649.88 and 357,355.48 is: 536,233.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,854 : 985,649.88 = 357,355.48 : x
  2. Step 2: Convert to fraction form
    656,854/985,649.88 = 357,355.48/x
  3. Step 3: Cross multiply
    656,854x = 985,649.88 × 357,355.48
  4. Step 4: Simplify right side
    656,854x = 352,227,385,979.34
  5. Step 5: Solve for x
    x = 352,227,385,979.34/656,854
  6. Step 6: Final answer
    x = 536,233.91

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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.