Home / 876,770.76-1,209,945.42-489,584.28

Finding the Fourth Proportional to 876,770.76, 1,209,945.42 and 489,584.28

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Solution

The fourth proportional to 876,770.76, 1,209,945.42 and 489,584.28 is: 675,627.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,770.76 : 1,209,945.42 = 489,584.28 : x
  2. Step 2: Convert to fraction form
    876,770.76/1,209,945.42 = 489,584.28/x
  3. Step 3: Cross multiply
    876,770.76x = 1,209,945.42 × 489,584.28
  4. Step 4: Simplify right side
    876,770.76x = 592,370,257,290.00
  5. Step 5: Solve for x
    x = 592,370,257,290.00/876,770.76
  6. Step 6: Final answer
    x = 675,627.30

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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.