Home / 992,456.89-1,488,879.18-318,486.38

Finding the Fourth Proportional to 992,456.89, 1,488,879.18 and 318,486.38

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Solution

The fourth proportional to 992,456.89, 1,488,879.18 and 318,486.38 is: 477,791.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,456.89 : 1,488,879.18 = 318,486.38 : x
  2. Step 2: Convert to fraction form
    992,456.89/1,488,879.18 = 318,486.38/x
  3. Step 3: Cross multiply
    992,456.89x = 1,488,879.18 × 318,486.38
  4. Step 4: Simplify right side
    992,456.89x = 474,187,732,851.17
  5. Step 5: Solve for x
    x = 474,187,732,851.17/992,456.89
  6. Step 6: Final answer
    x = 477,791.77

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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.