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Finding the Fourth Proportional to 659,457.53, 988,669.50 and 260,397

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Solution

The fourth proportional to 659,457.53, 988,669.50 and 260,397 is: 390,391.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,457.53 : 988,669.50 = 260,397 : x
  2. Step 2: Convert to fraction form
    659,457.53/988,669.50 = 260,397/x
  3. Step 3: Cross multiply
    659,457.53x = 988,669.50 × 260,397
  4. Step 4: Simplify right side
    659,457.53x = 257,446,571,791.50
  5. Step 5: Solve for x
    x = 257,446,571,791.50/659,457.53
  6. Step 6: Final answer
    x = 390,391.44

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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.