Home / 428,771.90-591,666.45-237,784.70

Finding the Fourth Proportional to 428,771.90, 591,666.45 and 237,784.70

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Solution

The fourth proportional to 428,771.90, 591,666.45 and 237,784.70 is: 328,121.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,771.90 : 591,666.45 = 237,784.70 : x
  2. Step 2: Convert to fraction form
    428,771.90/591,666.45 = 237,784.70/x
  3. Step 3: Cross multiply
    428,771.90x = 591,666.45 × 237,784.70
  4. Step 4: Simplify right side
    428,771.90x = 140,689,229,313.32
  5. Step 5: Solve for x
    x = 140,689,229,313.32/428,771.90
  6. Step 6: Final answer
    x = 328,121.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.