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Finding the Fourth Proportional to 713,781.60, 1,069,765.20 and 292,581.60

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Solution

The fourth proportional to 713,781.60, 1,069,765.20 and 292,581.60 is: 438,500.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,781.60 : 1,069,765.20 = 292,581.60 : x
  2. Step 2: Convert to fraction form
    713,781.60/1,069,765.20 = 292,581.60/x
  3. Step 3: Cross multiply
    713,781.60x = 1,069,765.20 × 292,581.60
  4. Step 4: Simplify right side
    713,781.60x = 312,993,613,840.32
  5. Step 5: Solve for x
    x = 312,993,613,840.32/713,781.60
  6. Step 6: Final answer
    x = 438,500.54

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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.