Home / 718,212,948-991,134,292.68-400,673,195.34

Finding the Fourth Proportional to 718,212,948, 991,134,292.68 and 400,673,195.34

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Solution

The fourth proportional to 718,212,948, 991,134,292.68 and 400,673,195.34 is: 552,929,246.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,212,948 : 991,134,292.68 = 400,673,195.34 : x
  2. Step 2: Convert to fraction form
    718,212,948/991,134,292.68 = 400,673,195.34/x
  3. Step 3: Cross multiply
    718,212,948x = 991,134,292.68 × 400,673,195.34
  4. Step 4: Simplify right side
    718,212,948x = 397,120,944,059,146,304
  5. Step 5: Solve for x
    x = 397,120,944,059,146,304/718,212,948
  6. Step 6: Final answer
    x = 552,929,246.35

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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.