Home / 876,850.40-1,209,932.16-489,618.56

Finding the Fourth Proportional to 876,850.40, 1,209,932.16 and 489,618.56

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Solution

The fourth proportional to 876,850.40, 1,209,932.16 and 489,618.56 is: 675,605.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,850.40 : 1,209,932.16 = 489,618.56 : x
  2. Step 2: Convert to fraction form
    876,850.40/1,209,932.16 = 489,618.56/x
  3. Step 3: Cross multiply
    876,850.40x = 1,209,932.16 × 489,618.56
  4. Step 4: Simplify right side
    876,850.40x = 592,405,241,876.89
  5. Step 5: Solve for x
    x = 592,405,241,876.89/876,850.40
  6. Step 6: Final answer
    x = 675,605.83

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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.