Home / 809,129.10-1,215,005.85-544,064.70

Finding the Fourth Proportional to 809,129.10, 1,215,005.85 and 544,064.70

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Solution

The fourth proportional to 809,129.10, 1,215,005.85 and 544,064.70 is: 816,979.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,129.10 : 1,215,005.85 = 544,064.70 : x
  2. Step 2: Convert to fraction form
    809,129.10/1,215,005.85 = 544,064.70/x
  3. Step 3: Cross multiply
    809,129.10x = 1,215,005.85 × 544,064.70
  4. Step 4: Simplify right side
    809,129.10x = 661,041,793,278.50
  5. Step 5: Solve for x
    x = 661,041,793,278.50/809,129.10
  6. Step 6: Final answer
    x = 816,979.38

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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.