Home / 771,976,822.11-1,065,336,242.55-419,552,831.31

Finding the Fourth Proportional to 771,976,822.11, 1,065,336,242.55 and 419,552,831.31

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Solution

The fourth proportional to 771,976,822.11, 1,065,336,242.55 and 419,552,831.31 is: 578,987,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,976,822.11 : 1,065,336,242.55 = 419,552,831.31 : x
  2. Step 2: Convert to fraction form
    771,976,822.11/1,065,336,242.55 = 419,552,831.31/x
  3. Step 3: Cross multiply
    771,976,822.11x = 1,065,336,242.55 × 419,552,831.31
  4. Step 4: Simplify right side
    771,976,822.11x = 446,964,836,859,009,408
  5. Step 5: Solve for x
    x = 446,964,836,859,009,408/771,976,822.11
  6. Step 6: Final answer
    x = 578,987,378.97

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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.