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Finding the Fourth Proportional to 440,001.60, 660,986.55 and 422,068.20

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Solution

The fourth proportional to 440,001.60, 660,986.55 and 422,068.20 is: 634,046.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,001.60 : 660,986.55 = 422,068.20 : x
  2. Step 2: Convert to fraction form
    440,001.60/660,986.55 = 422,068.20/x
  3. Step 3: Cross multiply
    440,001.60x = 660,986.55 × 422,068.20
  4. Step 4: Simplify right side
    440,001.60x = 278,981,403,382.71
  5. Step 5: Solve for x
    x = 278,981,403,382.71/440,001.60
  6. Step 6: Final answer
    x = 634,046.34

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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.