Home / 679,087,115.12-1,018,629,401.27-212,784,236.71

Finding the Fourth Proportional to 679,087,115.12, 1,018,629,401.27 and 212,784,236.71

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Solution

The fourth proportional to 679,087,115.12, 1,018,629,401.27 and 212,784,236.71 is: 319,175,956.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,087,115.12 : 1,018,629,401.27 = 212,784,236.71 : x
  2. Step 2: Convert to fraction form
    679,087,115.12/1,018,629,401.27 = 212,784,236.71/x
  3. Step 3: Cross multiply
    679,087,115.12x = 1,018,629,401.27 × 212,784,236.71
  4. Step 4: Simplify right side
    679,087,115.12x = 216,748,279,639,601,248
  5. Step 5: Solve for x
    x = 216,748,279,639,601,248/679,087,115.12
  6. Step 6: Final answer
    x = 319,175,956.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.