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Finding the Fourth Proportional to 387,024.70, 579,034.88 and 339,280.60

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Solution

The fourth proportional to 387,024.70, 579,034.88 and 339,280.60 is: 507,604.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,024.70 : 579,034.88 = 339,280.60 : x
  2. Step 2: Convert to fraction form
    387,024.70/579,034.88 = 339,280.60/x
  3. Step 3: Cross multiply
    387,024.70x = 579,034.88 × 339,280.60
  4. Step 4: Simplify right side
    387,024.70x = 196,455,301,507.33
  5. Step 5: Solve for x
    x = 196,455,301,507.33/387,024.70
  6. Step 6: Final answer
    x = 507,604.04

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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.