Home / 897,681.38-1,238,819.55-489,791.30

Finding the Fourth Proportional to 897,681.38, 1,238,819.55 and 489,791.30

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Solution

The fourth proportional to 897,681.38, 1,238,819.55 and 489,791.30 is: 675,922.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,681.38 : 1,238,819.55 = 489,791.30 : x
  2. Step 2: Convert to fraction form
    897,681.38/1,238,819.55 = 489,791.30/x
  3. Step 3: Cross multiply
    897,681.38x = 1,238,819.55 × 489,791.30
  4. Step 4: Simplify right side
    897,681.38x = 606,763,037,859.92
  5. Step 5: Solve for x
    x = 606,763,037,859.92/897,681.38
  6. Step 6: Final answer
    x = 675,922.49

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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.