Home / 664,557.18-996,485.49-290,142.78

Finding the Fourth Proportional to 664,557.18, 996,485.49 and 290,142.78

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Solution

The fourth proportional to 664,557.18, 996,485.49 and 290,142.78 is: 435,061.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,557.18 : 996,485.49 = 290,142.78 : x
  2. Step 2: Convert to fraction form
    664,557.18/996,485.49 = 290,142.78/x
  3. Step 3: Cross multiply
    664,557.18x = 996,485.49 × 290,142.78
  4. Step 4: Simplify right side
    664,557.18x = 289,123,070,298.26
  5. Step 5: Solve for x
    x = 289,123,070,298.26/664,557.18
  6. Step 6: Final answer
    x = 435,061.24

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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.