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Finding the Fourth Proportional to 527,019.60, 791,047.80 and 261,080.40

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Solution

The fourth proportional to 527,019.60, 791,047.80 and 261,080.40 is: 391,877.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,019.60 : 791,047.80 = 261,080.40 : x
  2. Step 2: Convert to fraction form
    527,019.60/791,047.80 = 261,080.40/x
  3. Step 3: Cross multiply
    527,019.60x = 791,047.80 × 261,080.40
  4. Step 4: Simplify right side
    527,019.60x = 206,527,076,043.12
  5. Step 5: Solve for x
    x = 206,527,076,043.12/527,019.60
  6. Step 6: Final answer
    x = 391,877.41

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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.