Home / 1,010,990,721.20-1,516,486,081.80-972,248,672.30

Finding the Fourth Proportional to 1,010,990,721.20, 1,516,486,081.80 and 972,248,672.30

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Solution

The fourth proportional to 1,010,990,721.20, 1,516,486,081.80 and 972,248,672.30 is: 1,458,373,008.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010,990,721.20 : 1,516,486,081.80 = 972,248,672.30 : x
  2. Step 2: Convert to fraction form
    1,010,990,721.20/1,516,486,081.80 = 972,248,672.30/x
  3. Step 3: Cross multiply
    1,010,990,721.20x = 1,516,486,081.80 × 972,248,672.30
  4. Step 4: Simplify right side
    1,010,990,721.20x = 1,474,401,579,591,479,040
  5. Step 5: Solve for x
    x = 1,474,401,579,591,479,040/1,010,990,721.20
  6. Step 6: Final answer
    x = 1,458,373,008.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.