Home / 397,666.72-548,983.38-306,818.56

Finding the Fourth Proportional to 397,666.72, 548,983.38 and 306,818.56

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Solution

The fourth proportional to 397,666.72, 548,983.38 and 306,818.56 is: 423,566.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,666.72 : 548,983.38 = 306,818.56 : x
  2. Step 2: Convert to fraction form
    397,666.72/548,983.38 = 306,818.56/x
  3. Step 3: Cross multiply
    397,666.72x = 548,983.38 × 306,818.56
  4. Step 4: Simplify right side
    397,666.72x = 168,438,290,115.53
  5. Step 5: Solve for x
    x = 168,438,290,115.53/397,666.72
  6. Step 6: Final answer
    x = 423,566.47

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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.