Home / 418,320.52-577,119.33-309,684.88

Finding the Fourth Proportional to 418,320.52, 577,119.33 and 309,684.88

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Solution

The fourth proportional to 418,320.52, 577,119.33 and 309,684.88 is: 427,244.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,320.52 : 577,119.33 = 309,684.88 : x
  2. Step 2: Convert to fraction form
    418,320.52/577,119.33 = 309,684.88/x
  3. Step 3: Cross multiply
    418,320.52x = 577,119.33 × 309,684.88
  4. Step 4: Simplify right side
    418,320.52x = 178,725,134,097.30
  5. Step 5: Solve for x
    x = 178,725,134,097.30/418,320.52
  6. Step 6: Final answer
    x = 427,244.48

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1.5x scale

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.