Home / 1,290,656.67-1,781,149.42-709,904.36

Finding the Fourth Proportional to 1,290,656.67, 1,781,149.42 and 709,904.36

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Solution

The fourth proportional to 1,290,656.67, 1,781,149.42 and 709,904.36 is: 979,691.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,656.67 : 1,781,149.42 = 709,904.36 : x
  2. Step 2: Convert to fraction form
    1,290,656.67/1,781,149.42 = 709,904.36/x
  3. Step 3: Cross multiply
    1,290,656.67x = 1,781,149.42 × 709,904.36
  4. Step 4: Simplify right side
    1,290,656.67x = 1,264,445,739,069.47
  5. Step 5: Solve for x
    x = 1,264,445,739,069.47/1,290,656.67
  6. Step 6: Final answer
    x = 979,691.79

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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.