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Finding the Fourth Proportional to 611,498.20, 917,247.30 and 587,003.80

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Solution

The fourth proportional to 611,498.20, 917,247.30 and 587,003.80 is: 880,505.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,498.20 : 917,247.30 = 587,003.80 : x
  2. Step 2: Convert to fraction form
    611,498.20/917,247.30 = 587,003.80/x
  3. Step 3: Cross multiply
    611,498.20x = 917,247.30 × 587,003.80
  4. Step 4: Simplify right side
    611,498.20x = 538,427,650,639.74
  5. Step 5: Solve for x
    x = 538,427,650,639.74/611,498.20
  6. Step 6: Final answer
    x = 880,505.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.