Home / 1,223,147.90-1,687,897.82-679,318.72

Finding the Fourth Proportional to 1,223,147.90, 1,687,897.82 and 679,318.72

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Solution

The fourth proportional to 1,223,147.90, 1,687,897.82 and 679,318.72 is: 937,434.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,147.90 : 1,687,897.82 = 679,318.72 : x
  2. Step 2: Convert to fraction form
    1,223,147.90/1,687,897.82 = 679,318.72/x
  3. Step 3: Cross multiply
    1,223,147.90x = 1,687,897.82 × 679,318.72
  4. Step 4: Simplify right side
    1,223,147.90x = 1,146,620,584,051.74
  5. Step 5: Solve for x
    x = 1,146,620,584,051.74/1,223,147.90
  6. Step 6: Final answer
    x = 937,434.13

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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.