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Finding the Fourth Proportional to 658,981.89, 909,382.92 and 372,501.97

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Solution

The fourth proportional to 658,981.89, 909,382.92 and 372,501.97 is: 514,045.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,981.89 : 909,382.92 = 372,501.97 : x
  2. Step 2: Convert to fraction form
    658,981.89/909,382.92 = 372,501.97/x
  3. Step 3: Cross multiply
    658,981.89x = 909,382.92 × 372,501.97
  4. Step 4: Simplify right side
    658,981.89x = 338,746,929,184.35
  5. Step 5: Solve for x
    x = 338,746,929,184.35/658,981.89
  6. Step 6: Final answer
    x = 514,045.89

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1.5x scale

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.