Home / 1,231,108.64-1,698,885.30-772,470.44

Finding the Fourth Proportional to 1,231,108.64, 1,698,885.30 and 772,470.44

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Solution

The fourth proportional to 1,231,108.64, 1,698,885.30 and 772,470.44 is: 1,065,981.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,108.64 : 1,698,885.30 = 772,470.44 : x
  2. Step 2: Convert to fraction form
    1,231,108.64/1,698,885.30 = 772,470.44/x
  3. Step 3: Cross multiply
    1,231,108.64x = 1,698,885.30 × 772,470.44
  4. Step 4: Simplify right side
    1,231,108.64x = 1,312,338,675,200.53
  5. Step 5: Solve for x
    x = 1,312,338,675,200.53/1,231,108.64
  6. Step 6: Final answer
    x = 1,065,981.21

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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.