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Finding the Fourth Proportional to 402,353.20, 603,529.80 and 397,104.40

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Solution

The fourth proportional to 402,353.20, 603,529.80 and 397,104.40 is: 595,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,353.20 : 603,529.80 = 397,104.40 : x
  2. Step 2: Convert to fraction form
    402,353.20/603,529.80 = 397,104.40/x
  3. Step 3: Cross multiply
    402,353.20x = 603,529.80 × 397,104.40
  4. Step 4: Simplify right side
    402,353.20x = 239,664,339,111.12
  5. Step 5: Solve for x
    x = 239,664,339,111.12/402,353.20
  6. Step 6: Final answer
    x = 595,656.60

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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.