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Finding the Fourth Proportional to 614,385.30, 847,603.11 and 372,579.66

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Solution

The fourth proportional to 614,385.30, 847,603.11 and 372,579.66 is: 514,009.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,385.30 : 847,603.11 = 372,579.66 : x
  2. Step 2: Convert to fraction form
    614,385.30/847,603.11 = 372,579.66/x
  3. Step 3: Cross multiply
    614,385.30x = 847,603.11 × 372,579.66
  4. Step 4: Simplify right side
    614,385.30x = 315,799,678,538.74
  5. Step 5: Solve for x
    x = 315,799,678,538.74/614,385.30
  6. Step 6: Final answer
    x = 514,009.17

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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.