Home / 860,438.40-1,290,657.60-545,251.20

Finding the Fourth Proportional to 860,438.40, 1,290,657.60 and 545,251.20

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Solution

The fourth proportional to 860,438.40, 1,290,657.60 and 545,251.20 is: 817,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,438.40 : 1,290,657.60 = 545,251.20 : x
  2. Step 2: Convert to fraction form
    860,438.40/1,290,657.60 = 545,251.20/x
  3. Step 3: Cross multiply
    860,438.40x = 1,290,657.60 × 545,251.20
  4. Step 4: Simplify right side
    860,438.40x = 703,732,605,189.12
  5. Step 5: Solve for x
    x = 703,732,605,189.12/860,438.40
  6. Step 6: Final answer
    x = 817,876.80

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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.