Home / 287,409,819.60-431,114,729.40-82,944,565.20

Finding the Fourth Proportional to 287,409,819.60, 431,114,729.40 and 82,944,565.20

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Solution

The fourth proportional to 287,409,819.60, 431,114,729.40 and 82,944,565.20 is: 124,416,847.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,409,819.60 : 431,114,729.40 = 82,944,565.20 : x
  2. Step 2: Convert to fraction form
    287,409,819.60/431,114,729.40 = 82,944,565.20/x
  3. Step 3: Cross multiply
    287,409,819.60x = 431,114,729.40 × 82,944,565.20
  4. Step 4: Simplify right side
    287,409,819.60x = 35,758,623,781,398,656
  5. Step 5: Solve for x
    x = 35,758,623,781,398,656/287,409,819.60
  6. Step 6: Final answer
    x = 124,416,847.80

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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.