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Finding the Fourth Proportional to 417,687.48, 626,519.88 and 289,478.52

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Solution

The fourth proportional to 417,687.48, 626,519.88 and 289,478.52 is: 434,209.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,687.48 : 626,519.88 = 289,478.52 : x
  2. Step 2: Convert to fraction form
    417,687.48/626,519.88 = 289,478.52/x
  3. Step 3: Cross multiply
    417,687.48x = 626,519.88 × 289,478.52
  4. Step 4: Simplify right side
    417,687.48x = 181,364,047,612.98
  5. Step 5: Solve for x
    x = 181,364,047,612.98/417,687.48
  6. Step 6: Final answer
    x = 434,209.92

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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.