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Finding the Fourth Proportional to 609,866.64, 915,638 and 310,548.48

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Solution

The fourth proportional to 609,866.64, 915,638 and 310,548.48 is: 466,249.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,866.64 : 915,638 = 310,548.48 : x
  2. Step 2: Convert to fraction form
    609,866.64/915,638 = 310,548.48/x
  3. Step 3: Cross multiply
    609,866.64x = 915,638 × 310,548.48
  4. Step 4: Simplify right side
    609,866.64x = 284,349,989,130.24
  5. Step 5: Solve for x
    x = 284,349,989,130.24/609,866.64
  6. Step 6: Final answer
    x = 466,249.46

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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.