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Finding the Fourth Proportional to 860,468.88, 1,187,350.80 and 478,472.88

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Solution

The fourth proportional to 860,468.88, 1,187,350.80 and 478,472.88 is: 660,239.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,468.88 : 1,187,350.80 = 478,472.88 : x
  2. Step 2: Convert to fraction form
    860,468.88/1,187,350.80 = 478,472.88/x
  3. Step 3: Cross multiply
    860,468.88x = 1,187,350.80 × 478,472.88
  4. Step 4: Simplify right side
    860,468.88x = 568,115,156,846.30
  5. Step 5: Solve for x
    x = 568,115,156,846.30/860,468.88
  6. Step 6: Final answer
    x = 660,239.05

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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.