Home / 714,690,728.64-986,302,856.84-397,149,788.52

Finding the Fourth Proportional to 714,690,728.64, 986,302,856.84 and 397,149,788.52

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Solution

The fourth proportional to 714,690,728.64, 986,302,856.84 and 397,149,788.52 is: 548,083,185.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,690,728.64 : 986,302,856.84 = 397,149,788.52 : x
  2. Step 2: Convert to fraction form
    714,690,728.64/986,302,856.84 = 397,149,788.52/x
  3. Step 3: Cross multiply
    714,690,728.64x = 986,302,856.84 × 397,149,788.52
  4. Step 4: Simplify right side
    714,690,728.64x = 391,709,971,010,677,824
  5. Step 5: Solve for x
    x = 391,709,971,010,677,824/714,690,728.64
  6. Step 6: Final answer
    x = 548,083,185.23

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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.