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Finding the Fourth Proportional to 664,520.80, 996,781.20 and 465,066.40

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Solution

The fourth proportional to 664,520.80, 996,781.20 and 465,066.40 is: 697,599.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,520.80 : 996,781.20 = 465,066.40 : x
  2. Step 2: Convert to fraction form
    664,520.80/996,781.20 = 465,066.40/x
  3. Step 3: Cross multiply
    664,520.80x = 996,781.20 × 465,066.40
  4. Step 4: Simplify right side
    664,520.80x = 463,569,444,271.68
  5. Step 5: Solve for x
    x = 463,569,444,271.68/664,520.80
  6. Step 6: Final answer
    x = 697,599.60

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Double scale
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Similar ratio
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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.