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Finding the Fourth Proportional to 658,001.34, 987,408.09 and 258,571.98

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Solution

The fourth proportional to 658,001.34, 987,408.09 and 258,571.98 is: 388,017.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,001.34 : 987,408.09 = 258,571.98 : x
  2. Step 2: Convert to fraction form
    658,001.34/987,408.09 = 258,571.98/x
  3. Step 3: Cross multiply
    658,001.34x = 987,408.09 × 258,571.98
  4. Step 4: Simplify right side
    658,001.34x = 255,316,064,899.32
  5. Step 5: Solve for x
    x = 255,316,064,899.32/658,001.34
  6. Step 6: Final answer
    x = 388,017.55

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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.