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Finding the Fourth Proportional to 680,606.62, 1,019,126.31 and 479,840.02

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Solution

The fourth proportional to 680,606.62, 1,019,126.31 and 479,840.02 is: 718,502.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,606.62 : 1,019,126.31 = 479,840.02 : x
  2. Step 2: Convert to fraction form
    680,606.62/1,019,126.31 = 479,840.02/x
  3. Step 3: Cross multiply
    680,606.62x = 1,019,126.31 × 479,840.02
  4. Step 4: Simplify right side
    680,606.62x = 489,017,588,972.93
  5. Step 5: Solve for x
    x = 489,017,588,972.93/680,606.62
  6. Step 6: Final answer
    x = 718,502.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.