Home / 632,428.38-872,732.55-345,942.30

Finding the Fourth Proportional to 632,428.38, 872,732.55 and 345,942.30

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Solution

The fourth proportional to 632,428.38, 872,732.55 and 345,942.30 is: 477,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,428.38 : 872,732.55 = 345,942.30 : x
  2. Step 2: Convert to fraction form
    632,428.38/872,732.55 = 345,942.30/x
  3. Step 3: Cross multiply
    632,428.38x = 872,732.55 × 345,942.30
  4. Step 4: Simplify right side
    632,428.38x = 301,915,105,631.87
  5. Step 5: Solve for x
    x = 301,915,105,631.87/632,428.38
  6. Step 6: Final answer
    x = 477,390.19

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1.5x scale

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.