Home / 1,290,671.28-1,781,169.64-709,918.96

Finding the Fourth Proportional to 1,290,671.28, 1,781,169.64 and 709,918.96

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Solution

The fourth proportional to 1,290,671.28, 1,781,169.64 and 709,918.96 is: 979,711.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,671.28 : 1,781,169.64 = 709,918.96 : x
  2. Step 2: Convert to fraction form
    1,290,671.28/1,781,169.64 = 709,918.96/x
  3. Step 3: Cross multiply
    1,290,671.28x = 1,781,169.64 × 709,918.96
  4. Step 4: Simplify right side
    1,290,671.28x = 1,264,486,098,412.37
  5. Step 5: Solve for x
    x = 1,264,486,098,412.37/1,290,671.28
  6. Step 6: Final answer
    x = 979,711.97

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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.