Home / 427,582.28-641,177.10-123,907.40

Finding the Fourth Proportional to 427,582.28, 641,177.10 and 123,907.40

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Solution

The fourth proportional to 427,582.28, 641,177.10 and 123,907.40 is: 185,804.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,582.28 : 641,177.10 = 123,907.40 : x
  2. Step 2: Convert to fraction form
    427,582.28/641,177.10 = 123,907.40/x
  3. Step 3: Cross multiply
    427,582.28x = 641,177.10 × 123,907.40
  4. Step 4: Simplify right side
    427,582.28x = 79,446,587,400.54
  5. Step 5: Solve for x
    x = 79,446,587,400.54/427,582.28
  6. Step 6: Final answer
    x = 185,804.21

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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.