Home / 1,298,512,143.72-1,792,112,712.18-726,326,995.38

Finding the Fourth Proportional to 1,298,512,143.72, 1,792,112,712.18 and 726,326,995.38

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Solution

The fourth proportional to 1,298,512,143.72, 1,792,112,712.18 and 726,326,995.38 is: 1,002,424,080.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,512,143.72 : 1,792,112,712.18 = 726,326,995.38 : x
  2. Step 2: Convert to fraction form
    1,298,512,143.72/1,792,112,712.18 = 726,326,995.38/x
  3. Step 3: Cross multiply
    1,298,512,143.72x = 1,792,112,712.18 × 726,326,995.38
  4. Step 4: Simplify right side
    1,298,512,143.72x = 1,301,659,841,620,002,048
  5. Step 5: Solve for x
    x = 1,301,659,841,620,002,048/1,298,512,143.72
  6. Step 6: Final answer
    x = 1,002,424,080.45

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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.