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Finding the Fourth Proportional to 571,449.60, 788,659.20 and 345,081.60

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Solution

The fourth proportional to 571,449.60, 788,659.20 and 345,081.60 is: 476,248.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,449.60 : 788,659.20 = 345,081.60 : x
  2. Step 2: Convert to fraction form
    571,449.60/788,659.20 = 345,081.60/x
  3. Step 3: Cross multiply
    571,449.60x = 788,659.20 × 345,081.60
  4. Step 4: Simplify right side
    571,449.60x = 272,151,778,590.72
  5. Step 5: Solve for x
    x = 272,151,778,590.72/571,449.60
  6. Step 6: Final answer
    x = 476,248.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.