Home / 916,713.78-1,265,045.94-508,791.68

Finding the Fourth Proportional to 916,713.78, 1,265,045.94 and 508,791.68

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Solution

The fourth proportional to 916,713.78, 1,265,045.94 and 508,791.68 is: 702,121.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,713.78 : 1,265,045.94 = 508,791.68 : x
  2. Step 2: Convert to fraction form
    916,713.78/1,265,045.94 = 508,791.68/x
  3. Step 3: Cross multiply
    916,713.78x = 1,265,045.94 × 508,791.68
  4. Step 4: Simplify right side
    916,713.78x = 643,644,849,089.78
  5. Step 5: Solve for x
    x = 643,644,849,089.78/916,713.78
  6. Step 6: Final answer
    x = 702,121.93

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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.