Home / 642,529.16-886,695.45-356,054.03

Finding the Fourth Proportional to 642,529.16, 886,695.45 and 356,054.03

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Solution

The fourth proportional to 642,529.16, 886,695.45 and 356,054.03 is: 491,357.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,529.16 : 886,695.45 = 356,054.03 : x
  2. Step 2: Convert to fraction form
    642,529.16/886,695.45 = 356,054.03/x
  3. Step 3: Cross multiply
    642,529.16x = 886,695.45 × 356,054.03
  4. Step 4: Simplify right side
    642,529.16x = 315,711,488,355.16
  5. Step 5: Solve for x
    x = 315,711,488,355.16/642,529.16
  6. Step 6: Final answer
    x = 491,357.45

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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.