Home / 891,592,290.81-1,230,412,179.87-489,743,196.35

Finding the Fourth Proportional to 891,592,290.81, 1,230,412,179.87 and 489,743,196.35

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Solution

The fourth proportional to 891,592,290.81, 1,230,412,179.87 and 489,743,196.35 is: 675,853,750.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,592,290.81 : 1,230,412,179.87 = 489,743,196.35 : x
  2. Step 2: Convert to fraction form
    891,592,290.81/1,230,412,179.87 = 489,743,196.35/x
  3. Step 3: Cross multiply
    891,592,290.81x = 1,230,412,179.87 × 489,743,196.35
  4. Step 4: Simplify right side
    891,592,290.81x = 602,585,993,791,352,832
  5. Step 5: Solve for x
    x = 602,585,993,791,352,832/891,592,290.81
  6. Step 6: Final answer
    x = 675,853,750.65

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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.