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Finding the Fourth Proportional to 434,426.20, 650,861.70 and 372,218.20

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Solution

The fourth proportional to 434,426.20, 650,861.70 and 372,218.20 is: 557,661.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,426.20 : 650,861.70 = 372,218.20 : x
  2. Step 2: Convert to fraction form
    434,426.20/650,861.70 = 372,218.20/x
  3. Step 3: Cross multiply
    434,426.20x = 650,861.70 × 372,218.20
  4. Step 4: Simplify right side
    434,426.20x = 242,262,570,422.94
  5. Step 5: Solve for x
    x = 242,262,570,422.94/434,426.20
  6. Step 6: Final answer
    x = 557,661.05

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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.