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Finding the Fourth Proportional to 658,909.65, 909,285.84 and 372,419.94

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Solution

The fourth proportional to 658,909.65, 909,285.84 and 372,419.94 is: 513,934.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,909.65 : 909,285.84 = 372,419.94 : x
  2. Step 2: Convert to fraction form
    658,909.65/909,285.84 = 372,419.94/x
  3. Step 3: Cross multiply
    658,909.65x = 909,285.84 × 372,419.94
  4. Step 4: Simplify right side
    658,909.65x = 338,636,177,975.65
  5. Step 5: Solve for x
    x = 338,636,177,975.65/658,909.65
  6. Step 6: Final answer
    x = 513,934.16

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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.