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Finding the Fourth Proportional to 936,347,906.10, 1,404,521,859.15 and 878,952,278.10

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Solution

The fourth proportional to 936,347,906.10, 1,404,521,859.15 and 878,952,278.10 is: 1,318,428,417.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,347,906.10 : 1,404,521,859.15 = 878,952,278.10 : x
  2. Step 2: Convert to fraction form
    936,347,906.10/1,404,521,859.15 = 878,952,278.10/x
  3. Step 3: Cross multiply
    936,347,906.10x = 1,404,521,859.15 × 878,952,278.10
  4. Step 4: Simplify right side
    936,347,906.10x = 1,234,507,687,741,139,968
  5. Step 5: Solve for x
    x = 1,234,507,687,741,139,968/936,347,906.10
  6. Step 6: Final answer
    x = 1,318,428,417.15

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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.