Home / 787,220,388.38-1,086,357,679.84-429,988,392.84

Finding the Fourth Proportional to 787,220,388.38, 1,086,357,679.84 and 429,988,392.84

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Solution

The fourth proportional to 787,220,388.38, 1,086,357,679.84 and 429,988,392.84 is: 593,380,455.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,220,388.38 : 1,086,357,679.84 = 429,988,392.84 : x
  2. Step 2: Convert to fraction form
    787,220,388.38/1,086,357,679.84 = 429,988,392.84/x
  3. Step 3: Cross multiply
    787,220,388.38x = 1,086,357,679.84 × 429,988,392.84
  4. Step 4: Simplify right side
    787,220,388.38x = 467,121,192,803,792,832
  5. Step 5: Solve for x
    x = 467,121,192,803,792,832/787,220,388.38
  6. Step 6: Final answer
    x = 593,380,455.71

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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.