Home / 1,042,978,857.30-1,564,468,285.95-315,967,569.30

Finding the Fourth Proportional to 1,042,978,857.30, 1,564,468,285.95 and 315,967,569.30

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Solution

The fourth proportional to 1,042,978,857.30, 1,564,468,285.95 and 315,967,569.30 is: 473,951,353.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042,978,857.30 : 1,564,468,285.95 = 315,967,569.30 : x
  2. Step 2: Convert to fraction form
    1,042,978,857.30/1,564,468,285.95 = 315,967,569.30/x
  3. Step 3: Cross multiply
    1,042,978,857.30x = 1,564,468,285.95 × 315,967,569.30
  4. Step 4: Simplify right side
    1,042,978,857.30x = 494,321,241,558,558,848
  5. Step 5: Solve for x
    x = 494,321,241,558,558,848/1,042,978,857.30
  6. Step 6: Final answer
    x = 473,951,353.95

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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.