Home / 905,013.20-1,248,862.96-497,035.60

Finding the Fourth Proportional to 905,013.20, 1,248,862.96 and 497,035.60

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Solution

The fourth proportional to 905,013.20, 1,248,862.96 and 497,035.60 is: 685,878.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,013.20 : 1,248,862.96 = 497,035.60 : x
  2. Step 2: Convert to fraction form
    905,013.20/1,248,862.96 = 497,035.60/x
  3. Step 3: Cross multiply
    905,013.20x = 1,248,862.96 × 497,035.60
  4. Step 4: Simplify right side
    905,013.20x = 620,729,350,641.38
  5. Step 5: Solve for x
    x = 620,729,350,641.38/905,013.20
  6. Step 6: Final answer
    x = 685,878.78

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Double scale
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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.