Home / 860,148.80-1,187,077.20-478,211.12

Finding the Fourth Proportional to 860,148.80, 1,187,077.20 and 478,211.12

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Solution

The fourth proportional to 860,148.80, 1,187,077.20 and 478,211.12 is: 659,971.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,148.80 : 1,187,077.20 = 478,211.12 : x
  2. Step 2: Convert to fraction form
    860,148.80/1,187,077.20 = 478,211.12/x
  3. Step 3: Cross multiply
    860,148.80x = 1,187,077.20 × 478,211.12
  4. Step 4: Simplify right side
    860,148.80x = 567,673,517,338.46
  5. Step 5: Solve for x
    x = 567,673,517,338.46/860,148.80
  6. Step 6: Final answer
    x = 659,971.29

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Double scale
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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.