Home / 521,641,146.30-782,461,719.45-279,776,442.30

Finding the Fourth Proportional to 521,641,146.30, 782,461,719.45 and 279,776,442.30

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Solution

The fourth proportional to 521,641,146.30, 782,461,719.45 and 279,776,442.30 is: 419,664,663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,641,146.30 : 782,461,719.45 = 279,776,442.30 : x
  2. Step 2: Convert to fraction form
    521,641,146.30/782,461,719.45 = 279,776,442.30/x
  3. Step 3: Cross multiply
    521,641,146.30x = 782,461,719.45 × 279,776,442.30
  4. Step 4: Simplify right side
    521,641,146.30x = 218,914,356,103,661,728
  5. Step 5: Solve for x
    x = 218,914,356,103,661,728/521,641,146.30
  6. Step 6: Final answer
    x = 419,664,663.45

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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.