Home / 1,211,715.90-1,672,159.56-667,851.98

Finding the Fourth Proportional to 1,211,715.90, 1,672,159.56 and 667,851.98

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Solution

The fourth proportional to 1,211,715.90, 1,672,159.56 and 667,851.98 is: 921,631.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,715.90 : 1,672,159.56 = 667,851.98 : x
  2. Step 2: Convert to fraction form
    1,211,715.90/1,672,159.56 = 667,851.98/x
  3. Step 3: Cross multiply
    1,211,715.90x = 1,672,159.56 × 667,851.98
  4. Step 4: Simplify right side
    1,211,715.90x = 1,116,755,073,021.93
  5. Step 5: Solve for x
    x = 1,116,755,073,021.93/1,211,715.90
  6. Step 6: Final answer
    x = 921,631.11

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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.