Home / 699,628.86-1,049,443.29-665,634.78

Finding the Fourth Proportional to 699,628.86, 1,049,443.29 and 665,634.78

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Solution

The fourth proportional to 699,628.86, 1,049,443.29 and 665,634.78 is: 998,452.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,628.86 : 1,049,443.29 = 665,634.78 : x
  2. Step 2: Convert to fraction form
    699,628.86/1,049,443.29 = 665,634.78/x
  3. Step 3: Cross multiply
    699,628.86x = 1,049,443.29 × 665,634.78
  4. Step 4: Simplify right side
    699,628.86x = 698,545,953,461.63
  5. Step 5: Solve for x
    x = 698,545,953,461.63/699,628.86
  6. Step 6: Final answer
    x = 998,452.17

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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.