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Finding the Fourth Proportional to 638,710.80, 958,843.80 and 323,005.20

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Solution

The fourth proportional to 638,710.80, 958,843.80 and 323,005.20 is: 484,901.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,710.80 : 958,843.80 = 323,005.20 : x
  2. Step 2: Convert to fraction form
    638,710.80/958,843.80 = 323,005.20/x
  3. Step 3: Cross multiply
    638,710.80x = 958,843.80 × 323,005.20
  4. Step 4: Simplify right side
    638,710.80x = 309,711,533,387.76
  5. Step 5: Solve for x
    x = 309,711,533,387.76/638,710.80
  6. Step 6: Final answer
    x = 484,901.04

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1.5x scale

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.