Home / 1,291,491-1,782,273.90-710,780.97

Finding the Fourth Proportional to 1,291,491, 1,782,273.90 and 710,780.97

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Solution

The fourth proportional to 1,291,491, 1,782,273.90 and 710,780.97 is: 980,886.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,491 : 1,782,273.90 = 710,780.97 : x
  2. Step 2: Convert to fraction form
    1,291,491/1,782,273.90 = 710,780.97/x
  3. Step 3: Cross multiply
    1,291,491x = 1,782,273.90 × 710,780.97
  4. Step 4: Simplify right side
    1,291,491x = 1,266,806,371,447.68
  5. Step 5: Solve for x
    x = 1,266,806,371,447.68/1,291,491
  6. Step 6: Final answer
    x = 980,886.72

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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.