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Finding the Fourth Proportional to 649,513.40, 974,423.70 and 206,281.40

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Solution

The fourth proportional to 649,513.40, 974,423.70 and 206,281.40 is: 309,470.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,513.40 : 974,423.70 = 206,281.40 : x
  2. Step 2: Convert to fraction form
    649,513.40/974,423.70 = 206,281.40/x
  3. Step 3: Cross multiply
    649,513.40x = 974,423.70 × 206,281.40
  4. Step 4: Simplify right side
    649,513.40x = 201,005,485,029.18
  5. Step 5: Solve for x
    x = 201,005,485,029.18/649,513.40
  6. Step 6: Final answer
    x = 309,470.88

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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.