Home / 891,592,287.92-1,230,412,175.88-489,743,193.46

Finding the Fourth Proportional to 891,592,287.92, 1,230,412,175.88 and 489,743,193.46

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Solution

The fourth proportional to 891,592,287.92, 1,230,412,175.88 and 489,743,193.46 is: 675,853,746.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,592,287.92 : 1,230,412,175.88 = 489,743,193.46 : x
  2. Step 2: Convert to fraction form
    891,592,287.92/1,230,412,175.88 = 489,743,193.46/x
  3. Step 3: Cross multiply
    891,592,287.92x = 1,230,412,175.88 × 489,743,193.46
  4. Step 4: Simplify right side
    891,592,287.92x = 602,585,988,287,538,432
  5. Step 5: Solve for x
    x = 602,585,988,287,538,432/891,592,287.92
  6. Step 6: Final answer
    x = 675,853,746.66

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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.