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Finding the Fourth Proportional to 1,279,974.06, 1,766,330.31 and 707,001.90

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Solution

The fourth proportional to 1,279,974.06, 1,766,330.31 and 707,001.90 is: 975,643.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,974.06 : 1,766,330.31 = 707,001.90 : x
  2. Step 2: Convert to fraction form
    1,279,974.06/1,766,330.31 = 707,001.90/x
  3. Step 3: Cross multiply
    1,279,974.06x = 1,766,330.31 × 707,001.90
  4. Step 4: Simplify right side
    1,279,974.06x = 1,248,798,885,197.59
  5. Step 5: Solve for x
    x = 1,248,798,885,197.59/1,279,974.06
  6. Step 6: Final answer
    x = 975,643.90

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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.