Home / 860,335.38-1,187,255.64-478,358.82

Finding the Fourth Proportional to 860,335.38, 1,187,255.64 and 478,358.82

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Solution

The fourth proportional to 860,335.38, 1,187,255.64 and 478,358.82 is: 660,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,335.38 : 1,187,255.64 = 478,358.82 : x
  2. Step 2: Convert to fraction form
    860,335.38/1,187,255.64 = 478,358.82/x
  3. Step 3: Cross multiply
    860,335.38x = 1,187,255.64 × 478,358.82
  4. Step 4: Simplify right side
    860,335.38x = 567,934,206,988.75
  5. Step 5: Solve for x
    x = 567,934,206,988.75/860,335.38
  6. Step 6: Final answer
    x = 660,131.18

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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.