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Finding the Fourth Proportional to 659,452.90, 988,662.60 and 260,392.38

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Solution

The fourth proportional to 659,452.90, 988,662.60 and 260,392.38 is: 390,384.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,452.90 : 988,662.60 = 260,392.38 : x
  2. Step 2: Convert to fraction form
    659,452.90/988,662.60 = 260,392.38/x
  3. Step 3: Cross multiply
    659,452.90x = 988,662.60 × 260,392.38
  4. Step 4: Simplify right side
    659,452.90x = 257,440,207,430.99
  5. Step 5: Solve for x
    x = 257,440,207,430.99/659,452.90
  6. Step 6: Final answer
    x = 390,384.53

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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.