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Finding the Fourth Proportional to 1,253,361,509.73, 1,728,918,497.70 and 782,645,704.29

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Solution

The fourth proportional to 1,253,361,509.73, 1,728,918,497.70 and 782,645,704.29 is: 1,079,601,236.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253,361,509.73 : 1,728,918,497.70 = 782,645,704.29 : x
  2. Step 2: Convert to fraction form
    1,253,361,509.73/1,728,918,497.70 = 782,645,704.29/x
  3. Step 3: Cross multiply
    1,253,361,509.73x = 1,728,918,497.70 × 782,645,704.29
  4. Step 4: Simplify right side
    1,253,361,509.73x = 1,353,130,635,292,425,216
  5. Step 5: Solve for x
    x = 1,353,130,635,292,425,216/1,253,361,509.73
  6. Step 6: Final answer
    x = 1,079,601,236.19

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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.