Home / 860,616.72-1,187,634.20-478,635.30

Finding the Fourth Proportional to 860,616.72, 1,187,634.20 and 478,635.30

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Solution

The fourth proportional to 860,616.72, 1,187,634.20 and 478,635.30 is: 660,507.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,616.72 : 1,187,634.20 = 478,635.30 : x
  2. Step 2: Convert to fraction form
    860,616.72/1,187,634.20 = 478,635.30/x
  3. Step 3: Cross multiply
    860,616.72x = 1,187,634.20 × 478,635.30
  4. Step 4: Simplify right side
    860,616.72x = 568,443,651,607.26
  5. Step 5: Solve for x
    x = 568,443,651,607.26/860,616.72
  6. Step 6: Final answer
    x = 660,507.33

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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.