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Finding the Fourth Proportional to 434,635.20, 650,397.60 and 397,310.40

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Solution

The fourth proportional to 434,635.20, 650,397.60 and 397,310.40 is: 594,543.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,635.20 : 650,397.60 = 397,310.40 : x
  2. Step 2: Convert to fraction form
    434,635.20/650,397.60 = 397,310.40/x
  3. Step 3: Cross multiply
    434,635.20x = 650,397.60 × 397,310.40
  4. Step 4: Simplify right side
    434,635.20x = 258,409,730,615.04
  5. Step 5: Solve for x
    x = 258,409,730,615.04/434,635.20
  6. Step 6: Final answer
    x = 594,543.95

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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.