Home / 663,299.28-915,356.10-376,835.10

Finding the Fourth Proportional to 663,299.28, 915,356.10 and 376,835.10

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Solution

The fourth proportional to 663,299.28, 915,356.10 and 376,835.10 is: 520,034.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,299.28 : 915,356.10 = 376,835.10 : x
  2. Step 2: Convert to fraction form
    663,299.28/915,356.10 = 376,835.10/x
  3. Step 3: Cross multiply
    663,299.28x = 915,356.10 × 376,835.10
  4. Step 4: Simplify right side
    663,299.28x = 344,938,307,479.11
  5. Step 5: Solve for x
    x = 344,938,307,479.11/663,299.28
  6. Step 6: Final answer
    x = 520,034.20

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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.