Home / 853,101.64-1,280,439.66-432,672.76

Finding the Fourth Proportional to 853,101.64, 1,280,439.66 and 432,672.76

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Solution

The fourth proportional to 853,101.64, 1,280,439.66 and 432,672.76 is: 649,408.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,101.64 : 1,280,439.66 = 432,672.76 : x
  2. Step 2: Convert to fraction form
    853,101.64/1,280,439.66 = 432,672.76/x
  3. Step 3: Cross multiply
    853,101.64x = 1,280,439.66 × 432,672.76
  4. Step 4: Simplify right side
    853,101.64x = 554,011,361,705.66
  5. Step 5: Solve for x
    x = 554,011,361,705.66/853,101.64
  6. Step 6: Final answer
    x = 649,408.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.