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Finding the Fourth Proportional to 521,567.10, 782,350.65 and 432,993.60

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Solution

The fourth proportional to 521,567.10, 782,350.65 and 432,993.60 is: 649,490.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,567.10 : 782,350.65 = 432,993.60 : x
  2. Step 2: Convert to fraction form
    521,567.10/782,350.65 = 432,993.60/x
  3. Step 3: Cross multiply
    521,567.10x = 782,350.65 × 432,993.60
  4. Step 4: Simplify right side
    521,567.10x = 338,752,824,405.84
  5. Step 5: Solve for x
    x = 338,752,824,405.84/521,567.10
  6. Step 6: Final answer
    x = 649,490.40

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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.