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Finding the Fourth Proportional to 659,719.20, 910,335.84 and 369,347.04

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Solution

The fourth proportional to 659,719.20, 910,335.84 and 369,347.04 is: 509,656.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,719.20 : 910,335.84 = 369,347.04 : x
  2. Step 2: Convert to fraction form
    659,719.20/910,335.84 = 369,347.04/x
  3. Step 3: Cross multiply
    659,719.20x = 910,335.84 × 369,347.04
  4. Step 4: Simplify right side
    659,719.20x = 336,229,847,909.91
  5. Step 5: Solve for x
    x = 336,229,847,909.91/659,719.20
  6. Step 6: Final answer
    x = 509,656.00

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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.