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Finding the Fourth Proportional to 638,157.24, 880,657.18 and 347,768.89

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Solution

The fourth proportional to 638,157.24, 880,657.18 and 347,768.89 is: 479,921.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,157.24 : 880,657.18 = 347,768.89 : x
  2. Step 2: Convert to fraction form
    638,157.24/880,657.18 = 347,768.89/x
  3. Step 3: Cross multiply
    638,157.24x = 880,657.18 × 347,768.89
  4. Step 4: Simplify right side
    638,157.24x = 306,265,167,996.32
  5. Step 5: Solve for x
    x = 306,265,167,996.32/638,157.24
  6. Step 6: Final answer
    x = 479,921.17

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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.