Home / 491,444.05-678,402.06-330,392.53

Finding the Fourth Proportional to 491,444.05, 678,402.06 and 330,392.53

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Solution

The fourth proportional to 491,444.05, 678,402.06 and 330,392.53 is: 456,082.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,444.05 : 678,402.06 = 330,392.53 : x
  2. Step 2: Convert to fraction form
    491,444.05/678,402.06 = 330,392.53/x
  3. Step 3: Cross multiply
    491,444.05x = 678,402.06 × 330,392.53
  4. Step 4: Simplify right side
    491,444.05x = 224,138,972,960.61
  5. Step 5: Solve for x
    x = 224,138,972,960.61/491,444.05
  6. Step 6: Final answer
    x = 456,082.38

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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.