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Finding the Fourth Proportional to 659,929.86, 910,703.79 and 358,123.86

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Solution

The fourth proportional to 659,929.86, 910,703.79 and 358,123.86 is: 494,211.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,929.86 : 910,703.79 = 358,123.86 : x
  2. Step 2: Convert to fraction form
    659,929.86/910,703.79 = 358,123.86/x
  3. Step 3: Cross multiply
    659,929.86x = 910,703.79 × 358,123.86
  4. Step 4: Simplify right side
    659,929.86x = 326,144,756,591.43
  5. Step 5: Solve for x
    x = 326,144,756,591.43/659,929.86
  6. Step 6: Final answer
    x = 494,211.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.