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Finding the Fourth Proportional to 644,557.50, 889,512.58 and 372,710.70

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Solution

The fourth proportional to 644,557.50, 889,512.58 and 372,710.70 is: 514,354.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,557.50 : 889,512.58 = 372,710.70 : x
  2. Step 2: Convert to fraction form
    644,557.50/889,512.58 = 372,710.70/x
  3. Step 3: Cross multiply
    644,557.50x = 889,512.58 × 372,710.70
  4. Step 4: Simplify right side
    644,557.50x = 331,530,856,350.61
  5. Step 5: Solve for x
    x = 331,530,856,350.61/644,557.50
  6. Step 6: Final answer
    x = 514,354.20

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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.