Home / 709,901.82-979,657.06-387,610.92

Finding the Fourth Proportional to 709,901.82, 979,657.06 and 387,610.92

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Solution

The fourth proportional to 709,901.82, 979,657.06 and 387,610.92 is: 534,899.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,901.82 : 979,657.06 = 387,610.92 : x
  2. Step 2: Convert to fraction form
    709,901.82/979,657.06 = 387,610.92/x
  3. Step 3: Cross multiply
    709,901.82x = 979,657.06 × 387,610.92
  4. Step 4: Simplify right side
    709,901.82x = 379,725,774,311.10
  5. Step 5: Solve for x
    x = 379,725,774,311.10/709,901.82
  6. Step 6: Final answer
    x = 534,899.00

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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.