Home / 869,801.28-1,304,177.67-389,942.27

Finding the Fourth Proportional to 869,801.28, 1,304,177.67 and 389,942.27

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Solution

The fourth proportional to 869,801.28, 1,304,177.67 and 389,942.27 is: 584,678.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,801.28 : 1,304,177.67 = 389,942.27 : x
  2. Step 2: Convert to fraction form
    869,801.28/1,304,177.67 = 389,942.27/x
  3. Step 3: Cross multiply
    869,801.28x = 1,304,177.67 × 389,942.27
  4. Step 4: Simplify right side
    869,801.28x = 508,554,001,123.11
  5. Step 5: Solve for x
    x = 508,554,001,123.11/869,801.28
  6. Step 6: Final answer
    x = 584,678.38

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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.