Home / 1,333,434.60-1,840,139.74-721,587.36

Finding the Fourth Proportional to 1,333,434.60, 1,840,139.74 and 721,587.36

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Solution

The fourth proportional to 1,333,434.60, 1,840,139.74 and 721,587.36 is: 995,790.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333,434.60 : 1,840,139.74 = 721,587.36 : x
  2. Step 2: Convert to fraction form
    1,333,434.60/1,840,139.74 = 721,587.36/x
  3. Step 3: Cross multiply
    1,333,434.60x = 1,840,139.74 × 721,587.36
  4. Step 4: Simplify right side
    1,333,434.60x = 1,327,821,577,017.69
  5. Step 5: Solve for x
    x = 1,327,821,577,017.69/1,333,434.60
  6. Step 6: Final answer
    x = 995,790.55

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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.