Home / 787,221,062.42-1,086,358,607.34-429,989,067.12

Finding the Fourth Proportional to 787,221,062.42, 1,086,358,607.34 and 429,989,067.12

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Solution

The fourth proportional to 787,221,062.42, 1,086,358,607.34 and 429,989,067.12 is: 593,381,384.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,221,062.42 : 1,086,358,607.34 = 429,989,067.12 : x
  2. Step 2: Convert to fraction form
    787,221,062.42/1,086,358,607.34 = 429,989,067.12/x
  3. Step 3: Cross multiply
    787,221,062.42x = 1,086,358,607.34 × 429,989,067.12
  4. Step 4: Simplify right side
    787,221,062.42x = 467,122,324,127,908,928
  5. Step 5: Solve for x
    x = 467,122,324,127,908,928/787,221,062.42
  6. Step 6: Final answer
    x = 593,381,384.76

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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.