Home / 1,443,645,645.78-1,992,179,444.82-817,100,621.66

Finding the Fourth Proportional to 1,443,645,645.78, 1,992,179,444.82 and 817,100,621.66

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Solution

The fourth proportional to 1,443,645,645.78, 1,992,179,444.82 and 817,100,621.66 is: 1,127,569,682.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,645,645.78 : 1,992,179,444.82 = 817,100,621.66 : x
  2. Step 2: Convert to fraction form
    1,443,645,645.78/1,992,179,444.82 = 817,100,621.66/x
  3. Step 3: Cross multiply
    1,443,645,645.78x = 1,992,179,444.82 × 817,100,621.66
  4. Step 4: Simplify right side
    1,443,645,645.78x = 1,627,811,062,820,695,552
  5. Step 5: Solve for x
    x = 1,627,811,062,820,695,552/1,443,645,645.78
  6. Step 6: Final answer
    x = 1,127,569,682.75

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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.