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Finding the Fourth Proportional to 527,407.20, 790,750.65 and 253,709.01

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Solution

The fourth proportional to 527,407.20, 790,750.65 and 253,709.01 is: 380,390.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,407.20 : 790,750.65 = 253,709.01 : x
  2. Step 2: Convert to fraction form
    527,407.20/790,750.65 = 253,709.01/x
  3. Step 3: Cross multiply
    527,407.20x = 790,750.65 × 253,709.01
  4. Step 4: Simplify right side
    527,407.20x = 200,620,565,519.77
  5. Step 5: Solve for x
    x = 200,620,565,519.77/527,407.20
  6. Step 6: Final answer
    x = 380,390.27

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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.