Home / 1,290,918.01-1,781,456.97-710,128.62

Finding the Fourth Proportional to 1,290,918.01, 1,781,456.97 and 710,128.62

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Solution

The fourth proportional to 1,290,918.01, 1,781,456.97 and 710,128.62 is: 979,972.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,918.01 : 1,781,456.97 = 710,128.62 : x
  2. Step 2: Convert to fraction form
    1,290,918.01/1,781,456.97 = 710,128.62/x
  3. Step 3: Cross multiply
    1,290,918.01x = 1,781,456.97 × 710,128.62
  4. Step 4: Simplify right side
    1,290,918.01x = 1,265,063,579,695.48
  5. Step 5: Solve for x
    x = 1,265,063,579,695.48/1,290,918.01
  6. Step 6: Final answer
    x = 979,972.06

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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.