Home / 970,882,521.48-1,340,182,232.87-636,376,600.68

Finding the Fourth Proportional to 970,882,521.48, 1,340,182,232.87 and 636,376,600.68

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Solution

The fourth proportional to 970,882,521.48, 1,340,182,232.87 and 636,376,600.68 is: 878,438,528.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,882,521.48 : 1,340,182,232.87 = 636,376,600.68 : x
  2. Step 2: Convert to fraction form
    970,882,521.48/1,340,182,232.87 = 636,376,600.68/x
  3. Step 3: Cross multiply
    970,882,521.48x = 1,340,182,232.87 × 636,376,600.68
  4. Step 4: Simplify right side
    970,882,521.48x = 852,860,613,645,542,656
  5. Step 5: Solve for x
    x = 852,860,613,645,542,656/970,882,521.48
  6. Step 6: Final answer
    x = 878,438,528.63

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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.