Home / 658,120.94-986,456.87-430,322.61

Finding the Fourth Proportional to 658,120.94, 986,456.87 and 430,322.61

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Solution

The fourth proportional to 658,120.94, 986,456.87 and 430,322.61 is: 645,010.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,120.94 : 986,456.87 = 430,322.61 : x
  2. Step 2: Convert to fraction form
    658,120.94/986,456.87 = 430,322.61/x
  3. Step 3: Cross multiply
    658,120.94x = 986,456.87 × 430,322.61
  4. Step 4: Simplify right side
    658,120.94x = 424,494,692,799.22
  5. Step 5: Solve for x
    x = 424,494,692,799.22/658,120.94
  6. Step 6: Final answer
    x = 645,010.16

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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.