Home / 1,294,431.60-1,786,323.90-721,508.10

Finding the Fourth Proportional to 1,294,431.60, 1,786,323.90 and 721,508.10

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Solution

The fourth proportional to 1,294,431.60, 1,786,323.90 and 721,508.10 is: 995,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,431.60 : 1,786,323.90 = 721,508.10 : x
  2. Step 2: Convert to fraction form
    1,294,431.60/1,786,323.90 = 721,508.10/x
  3. Step 3: Cross multiply
    1,294,431.60x = 1,786,323.90 × 721,508.10
  4. Step 4: Simplify right side
    1,294,431.60x = 1,288,847,163,073.59
  5. Step 5: Solve for x
    x = 1,288,847,163,073.59/1,294,431.60
  6. Step 6: Final answer
    x = 995,685.80

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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.