Home / 705,129.98-1,055,356.05-642,095.78

Finding the Fourth Proportional to 705,129.98, 1,055,356.05 and 642,095.78

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Solution

The fourth proportional to 705,129.98, 1,055,356.05 and 642,095.78 is: 961,013.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,129.98 : 1,055,356.05 = 642,095.78 : x
  2. Step 2: Convert to fraction form
    705,129.98/1,055,356.05 = 642,095.78/x
  3. Step 3: Cross multiply
    705,129.98x = 1,055,356.05 × 642,095.78
  4. Step 4: Simplify right side
    705,129.98x = 677,639,666,102.47
  5. Step 5: Solve for x
    x = 677,639,666,102.47/705,129.98
  6. Step 6: Final answer
    x = 961,013.83

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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.