Home / 1,290,176.28-1,780,488.96-709,443.60

Finding the Fourth Proportional to 1,290,176.28, 1,780,488.96 and 709,443.60

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Solution

The fourth proportional to 1,290,176.28, 1,780,488.96 and 709,443.60 is: 979,057.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,176.28 : 1,780,488.96 = 709,443.60 : x
  2. Step 2: Convert to fraction form
    1,290,176.28/1,780,488.96 = 709,443.60/x
  3. Step 3: Cross multiply
    1,290,176.28x = 1,780,488.96 × 709,443.60
  4. Step 4: Simplify right side
    1,290,176.28x = 1,263,156,497,542.66
  5. Step 5: Solve for x
    x = 1,263,156,497,542.66/1,290,176.28
  6. Step 6: Final answer
    x = 979,057.29

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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.