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Finding the Fourth Proportional to 657,033.40, 985,319.70 and 341,385.40

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Solution

The fourth proportional to 657,033.40, 985,319.70 and 341,385.40 is: 511,958.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,033.40 : 985,319.70 = 341,385.40 : x
  2. Step 2: Convert to fraction form
    657,033.40/985,319.70 = 341,385.40/x
  3. Step 3: Cross multiply
    657,033.40x = 985,319.70 × 341,385.40
  4. Step 4: Simplify right side
    657,033.40x = 336,373,759,912.38
  5. Step 5: Solve for x
    x = 336,373,759,912.38/657,033.40
  6. Step 6: Final answer
    x = 511,958.39

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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.