Home / 1,290,653.92-1,781,145.62-709,901.61

Finding the Fourth Proportional to 1,290,653.92, 1,781,145.62 and 709,901.61

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Solution

The fourth proportional to 1,290,653.92, 1,781,145.62 and 709,901.61 is: 979,687.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,653.92 : 1,781,145.62 = 709,901.61 : x
  2. Step 2: Convert to fraction form
    1,290,653.92/1,781,145.62 = 709,901.61/x
  3. Step 3: Cross multiply
    1,290,653.92x = 1,781,145.62 × 709,901.61
  4. Step 4: Simplify right side
    1,290,653.92x = 1,264,438,143,282.45
  5. Step 5: Solve for x
    x = 1,264,438,143,282.45/1,290,653.92
  6. Step 6: Final answer
    x = 979,687.99

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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.