Home / 649,191.77-895,918.76-391,149.78

Finding the Fourth Proportional to 649,191.77, 895,918.76 and 391,149.78

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Solution

The fourth proportional to 649,191.77, 895,918.76 and 391,149.78 is: 539,807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,191.77 : 895,918.76 = 391,149.78 : x
  2. Step 2: Convert to fraction form
    649,191.77/895,918.76 = 391,149.78/x
  3. Step 3: Cross multiply
    649,191.77x = 895,918.76 × 391,149.78
  4. Step 4: Simplify right side
    649,191.77x = 350,438,425,871.87
  5. Step 5: Solve for x
    x = 350,438,425,871.87/649,191.77
  6. Step 6: Final answer
    x = 539,807.25

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1.5x scale

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.