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Finding the Fourth Proportional to 845,642,759.70, 1,268,464,139.55 and 845,642,759.70

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Solution

The fourth proportional to 845,642,759.70, 1,268,464,139.55 and 845,642,759.70 is: 1,268,464,139.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,642,759.70 : 1,268,464,139.55 = 845,642,759.70 : x
  2. Step 2: Convert to fraction form
    845,642,759.70/1,268,464,139.55 = 845,642,759.70/x
  3. Step 3: Cross multiply
    845,642,759.70x = 1,268,464,139.55 × 845,642,759.70
  4. Step 4: Simplify right side
    845,642,759.70x = 1,072,667,515,549,547,904
  5. Step 5: Solve for x
    x = 1,072,667,515,549,547,904/845,642,759.70
  6. Step 6: Final answer
    x = 1,268,464,139.55

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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.