Home / 1,230,963.75-1,699,013.43-721,830.15

Finding the Fourth Proportional to 1,230,963.75, 1,699,013.43 and 721,830.15

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Solution

The fourth proportional to 1,230,963.75, 1,699,013.43 and 721,830.15 is: 996,291.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,963.75 : 1,699,013.43 = 721,830.15 : x
  2. Step 2: Convert to fraction form
    1,230,963.75/1,699,013.43 = 721,830.15/x
  3. Step 3: Cross multiply
    1,230,963.75x = 1,699,013.43 × 721,830.15
  4. Step 4: Simplify right side
    1,230,963.75x = 1,226,399,119,028.91
  5. Step 5: Solve for x
    x = 1,226,399,119,028.91/1,230,963.75
  6. Step 6: Final answer
    x = 996,291.82

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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.