Home / 674,788.78-1,011,683.20-408,486.30

Finding the Fourth Proportional to 674,788.78, 1,011,683.20 and 408,486.30

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Solution

The fourth proportional to 674,788.78, 1,011,683.20 and 408,486.30 is: 612,426.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,788.78 : 1,011,683.20 = 408,486.30 : x
  2. Step 2: Convert to fraction form
    674,788.78/1,011,683.20 = 408,486.30/x
  3. Step 3: Cross multiply
    674,788.78x = 1,011,683.20 × 408,486.30
  4. Step 4: Simplify right side
    674,788.78x = 413,258,727,140.16
  5. Step 5: Solve for x
    x = 413,258,727,140.16/674,788.78
  6. Step 6: Final answer
    x = 612,426.79

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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.