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Finding the Fourth Proportional to 768,652.20, 1,060,640.58 and 429,134.76

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Solution

The fourth proportional to 768,652.20, 1,060,640.58 and 429,134.76 is: 592,150.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,652.20 : 1,060,640.58 = 429,134.76 : x
  2. Step 2: Convert to fraction form
    768,652.20/1,060,640.58 = 429,134.76/x
  3. Step 3: Cross multiply
    768,652.20x = 1,060,640.58 × 429,134.76
  4. Step 4: Simplify right side
    768,652.20x = 455,157,740,744.56
  5. Step 5: Solve for x
    x = 455,157,740,744.56/768,652.20
  6. Step 6: Final answer
    x = 592,150.44

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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.