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Finding the Fourth Proportional to 527,991.60, 790,237.80 and 486,001.20

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Solution

The fourth proportional to 527,991.60, 790,237.80 and 486,001.20 is: 727,391.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,991.60 : 790,237.80 = 486,001.20 : x
  2. Step 2: Convert to fraction form
    527,991.60/790,237.80 = 486,001.20/x
  3. Step 3: Cross multiply
    527,991.60x = 790,237.80 × 486,001.20
  4. Step 4: Simplify right side
    527,991.60x = 384,056,519,085.36
  5. Step 5: Solve for x
    x = 384,056,519,085.36/527,991.60
  6. Step 6: Final answer
    x = 727,391.34

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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.