Home / 1,290,909.49-1,781,445.24-710,120.13

Finding the Fourth Proportional to 1,290,909.49, 1,781,445.24 and 710,120.13

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Solution

The fourth proportional to 1,290,909.49, 1,781,445.24 and 710,120.13 is: 979,960.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,909.49 : 1,781,445.24 = 710,120.13 : x
  2. Step 2: Convert to fraction form
    1,290,909.49/1,781,445.24 = 710,120.13/x
  3. Step 3: Cross multiply
    1,290,909.49x = 1,781,445.24 × 710,120.13
  4. Step 4: Simplify right side
    1,290,909.49x = 1,265,040,125,416.68
  5. Step 5: Solve for x
    x = 1,265,040,125,416.68/1,290,909.49
  6. Step 6: Final answer
    x = 979,960.36

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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.