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Finding the Fourth Proportional to 658,812.16, 988,830.60 and 259,728.40

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Solution

The fourth proportional to 658,812.16, 988,830.60 and 259,728.40 is: 389,834.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,812.16 : 988,830.60 = 259,728.40 : x
  2. Step 2: Convert to fraction form
    658,812.16/988,830.60 = 259,728.40/x
  3. Step 3: Cross multiply
    658,812.16x = 988,830.60 × 259,728.40
  4. Step 4: Simplify right side
    658,812.16x = 256,827,389,609.04
  5. Step 5: Solve for x
    x = 256,827,389,609.04/658,812.16
  6. Step 6: Final answer
    x = 389,834.02

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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.