Home / 1,290,652.92-1,781,144.24-709,900.61

Finding the Fourth Proportional to 1,290,652.92, 1,781,144.24 and 709,900.61

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Solution

The fourth proportional to 1,290,652.92, 1,781,144.24 and 709,900.61 is: 979,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,652.92 : 1,781,144.24 = 709,900.61 : x
  2. Step 2: Convert to fraction form
    1,290,652.92/1,781,144.24 = 709,900.61/x
  3. Step 3: Cross multiply
    1,290,652.92x = 1,781,144.24 × 709,900.61
  4. Step 4: Simplify right side
    1,290,652.92x = 1,264,435,370,018.76
  5. Step 5: Solve for x
    x = 1,264,435,370,018.76/1,290,652.92
  6. Step 6: Final answer
    x = 979,686.60

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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.