Home / 721,838.20-1,083,534.90-406,910.20

Finding the Fourth Proportional to 721,838.20, 1,083,534.90 and 406,910.20

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Solution

The fourth proportional to 721,838.20, 1,083,534.90 and 406,910.20 is: 610,803.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,838.20 : 1,083,534.90 = 406,910.20 : x
  2. Step 2: Convert to fraction form
    721,838.20/1,083,534.90 = 406,910.20/x
  3. Step 3: Cross multiply
    721,838.20x = 1,083,534.90 × 406,910.20
  4. Step 4: Simplify right side
    721,838.20x = 440,901,402,865.98
  5. Step 5: Solve for x
    x = 440,901,402,865.98/721,838.20
  6. Step 6: Final answer
    x = 610,803.64

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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.