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Finding the Fourth Proportional to 659,558.72, 988,670.24 and 260,480.88

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Solution

The fourth proportional to 659,558.72, 988,670.24 and 260,480.88 is: 390,457.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,558.72 : 988,670.24 = 260,480.88 : x
  2. Step 2: Convert to fraction form
    659,558.72/988,670.24 = 260,480.88/x
  3. Step 3: Cross multiply
    659,558.72x = 988,670.24 × 260,480.88
  4. Step 4: Simplify right side
    659,558.72x = 257,529,694,145.01
  5. Step 5: Solve for x
    x = 257,529,694,145.01/659,558.72
  6. Step 6: Final answer
    x = 390,457.57

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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.