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Finding the Fourth Proportional to 860,447.92, 1,187,446.80 and 473,279.68

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Solution

The fourth proportional to 860,447.92, 1,187,446.80 and 473,279.68 is: 653,141.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,447.92 : 1,187,446.80 = 473,279.68 : x
  2. Step 2: Convert to fraction form
    860,447.92/1,187,446.80 = 473,279.68/x
  3. Step 3: Cross multiply
    860,447.92x = 1,187,446.80 × 473,279.68
  4. Step 4: Simplify right side
    860,447.92x = 561,994,441,521.02
  5. Step 5: Solve for x
    x = 561,994,441,521.02/860,447.92
  6. Step 6: Final answer
    x = 653,141.73

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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.