Home / 897,135.80-1,238,077.17-489,259.89

Finding the Fourth Proportional to 897,135.80, 1,238,077.17 and 489,259.89

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Solution

The fourth proportional to 897,135.80, 1,238,077.17 and 489,259.89 is: 675,194.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,135.80 : 1,238,077.17 = 489,259.89 : x
  2. Step 2: Convert to fraction form
    897,135.80/1,238,077.17 = 489,259.89/x
  3. Step 3: Cross multiply
    897,135.80x = 1,238,077.17 × 489,259.89
  4. Step 4: Simplify right side
    897,135.80x = 605,741,500,005.71
  5. Step 5: Solve for x
    x = 605,741,500,005.71/897,135.80
  6. Step 6: Final answer
    x = 675,194.89

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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.