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Finding the Fourth Proportional to 559,873,407.60, 840,230,015.40 and 287,103,769.20

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Solution

The fourth proportional to 559,873,407.60, 840,230,015.40 and 287,103,769.20 is: 430,870,981.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,873,407.60 : 840,230,015.40 = 287,103,769.20 : x
  2. Step 2: Convert to fraction form
    559,873,407.60/840,230,015.40 = 287,103,769.20/x
  3. Step 3: Cross multiply
    559,873,407.60x = 840,230,015.40 × 287,103,769.20
  4. Step 4: Simplify right side
    559,873,407.60x = 241,233,204,416,314,016
  5. Step 5: Solve for x
    x = 241,233,204,416,314,016/559,873,407.60
  6. Step 6: Final answer
    x = 430,870,981.09

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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.