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Finding the Fourth Proportional to 659,568.60, 988,623.90 and 260,076.60

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Solution

The fourth proportional to 659,568.60, 988,623.90 and 260,076.60 is: 389,827.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,568.60 : 988,623.90 = 260,076.60 : x
  2. Step 2: Convert to fraction form
    659,568.60/988,623.90 = 260,076.60/x
  3. Step 3: Cross multiply
    659,568.60x = 988,623.90 × 260,076.60
  4. Step 4: Simplify right side
    659,568.60x = 257,117,942,590.74
  5. Step 5: Solve for x
    x = 257,117,942,590.74/659,568.60
  6. Step 6: Final answer
    x = 389,827.45

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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.