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Finding the Fourth Proportional to 440,511.60, 659,017.80 and 381,997.20

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Solution

The fourth proportional to 440,511.60, 659,017.80 and 381,997.20 is: 571,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,511.60 : 659,017.80 = 381,997.20 : x
  2. Step 2: Convert to fraction form
    440,511.60/659,017.80 = 381,997.20/x
  3. Step 3: Cross multiply
    440,511.60x = 659,017.80 × 381,997.20
  4. Step 4: Simplify right side
    440,511.60x = 251,742,954,350.16
  5. Step 5: Solve for x
    x = 251,742,954,350.16/440,511.60
  6. Step 6: Final answer
    x = 571,478.60

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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.