Home / 663,445.18-915,519.79-376,925.50

Finding the Fourth Proportional to 663,445.18, 915,519.79 and 376,925.50

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Solution

The fourth proportional to 663,445.18, 915,519.79 and 376,925.50 is: 520,137.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,445.18 : 915,519.79 = 376,925.50 : x
  2. Step 2: Convert to fraction form
    663,445.18/915,519.79 = 376,925.50/x
  3. Step 3: Cross multiply
    663,445.18x = 915,519.79 × 376,925.50
  4. Step 4: Simplify right side
    663,445.18x = 345,082,754,605.65
  5. Step 5: Solve for x
    x = 345,082,754,605.65/663,445.18
  6. Step 6: Final answer
    x = 520,137.56

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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.