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Finding the Fourth Proportional to 970,888,964.12, 1,340,191,117.80 and 636,383,034.44

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Solution

The fourth proportional to 970,888,964.12, 1,340,191,117.80 and 636,383,034.44 is: 878,447,404.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,888,964.12 : 1,340,191,117.80 = 636,383,034.44 : x
  2. Step 2: Convert to fraction form
    970,888,964.12/1,340,191,117.80 = 636,383,034.44/x
  3. Step 3: Cross multiply
    970,888,964.12x = 1,340,191,117.80 × 636,383,034.44
  4. Step 4: Simplify right side
    970,888,964.12x = 852,874,890,275,099,520
  5. Step 5: Solve for x
    x = 852,874,890,275,099,520/970,888,964.12
  6. Step 6: Final answer
    x = 878,447,404.18

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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.