Home / 860,422.02-1,187,333.64-478,440.60

Finding the Fourth Proportional to 860,422.02, 1,187,333.64 and 478,440.60

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Solution

The fourth proportional to 860,422.02, 1,187,333.64 and 478,440.60 is: 660,220.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,422.02 : 1,187,333.64 = 478,440.60 : x
  2. Step 2: Convert to fraction form
    860,422.02/1,187,333.64 = 478,440.60/x
  3. Step 3: Cross multiply
    860,422.02x = 1,187,333.64 × 478,440.60
  4. Step 4: Simplify right side
    860,422.02x = 568,068,619,121.78
  5. Step 5: Solve for x
    x = 568,068,619,121.78/860,422.02
  6. Step 6: Final answer
    x = 660,220.92

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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.