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Finding the Fourth Proportional to 653,977.80, 980,999.10 and 339,049.80

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Solution

The fourth proportional to 653,977.80, 980,999.10 and 339,049.80 is: 508,591.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,977.80 : 980,999.10 = 339,049.80 : x
  2. Step 2: Convert to fraction form
    653,977.80/980,999.10 = 339,049.80/x
  3. Step 3: Cross multiply
    653,977.80x = 980,999.10 × 339,049.80
  4. Step 4: Simplify right side
    653,977.80x = 332,607,548,655.18
  5. Step 5: Solve for x
    x = 332,607,548,655.18/653,977.80
  6. Step 6: Final answer
    x = 508,591.50

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1.5x scale

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.