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Finding the Fourth Proportional to 440,015.60, 660,023.40 and 262,431.20

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Solution

The fourth proportional to 440,015.60, 660,023.40 and 262,431.20 is: 393,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,015.60 : 660,023.40 = 262,431.20 : x
  2. Step 2: Convert to fraction form
    440,015.60/660,023.40 = 262,431.20/x
  3. Step 3: Cross multiply
    440,015.60x = 660,023.40 × 262,431.20
  4. Step 4: Simplify right side
    440,015.60x = 173,210,732,890.08
  5. Step 5: Solve for x
    x = 173,210,732,890.08/440,015.60
  6. Step 6: Final answer
    x = 393,646.80

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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.