Home / 678,009.31-935,631.76-372,077.82

Finding the Fourth Proportional to 678,009.31, 935,631.76 and 372,077.82

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Solution

The fourth proportional to 678,009.31, 935,631.76 and 372,077.82 is: 513,455.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,009.31 : 935,631.76 = 372,077.82 : x
  2. Step 2: Convert to fraction form
    678,009.31/935,631.76 = 372,077.82/x
  3. Step 3: Cross multiply
    678,009.31x = 935,631.76 × 372,077.82
  4. Step 4: Simplify right side
    678,009.31x = 348,127,825,583.56
  5. Step 5: Solve for x
    x = 348,127,825,583.56/678,009.31
  6. Step 6: Final answer
    x = 513,455.82

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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.