Home / 860,489.32-1,187,384.34-478,454.44

Finding the Fourth Proportional to 860,489.32, 1,187,384.34 and 478,454.44

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Solution

The fourth proportional to 860,489.32, 1,187,384.34 and 478,454.44 is: 660,216.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,489.32 : 1,187,384.34 = 478,454.44 : x
  2. Step 2: Convert to fraction form
    860,489.32/1,187,384.34 = 478,454.44/x
  3. Step 3: Cross multiply
    860,489.32x = 1,187,384.34 × 478,454.44
  4. Step 4: Simplify right side
    860,489.32x = 568,109,309,459.47
  5. Step 5: Solve for x
    x = 568,109,309,459.47/860,489.32
  6. Step 6: Final answer
    x = 660,216.57

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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.