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Finding the Fourth Proportional to 649,630, 974,534.91 and 200,386.18

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Solution

The fourth proportional to 649,630, 974,534.91 and 200,386.18 is: 300,607.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,630 : 974,534.91 = 200,386.18 : x
  2. Step 2: Convert to fraction form
    649,630/974,534.91 = 200,386.18/x
  3. Step 3: Cross multiply
    649,630x = 974,534.91 × 200,386.18
  4. Step 4: Simplify right side
    649,630x = 195,283,327,891.54
  5. Step 5: Solve for x
    x = 195,283,327,891.54/649,630
  6. Step 6: Final answer
    x = 300,607.00

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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.