Home / 679,993.40-1,019,990.10-409,388.60

Finding the Fourth Proportional to 679,993.40, 1,019,990.10 and 409,388.60

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Solution

The fourth proportional to 679,993.40, 1,019,990.10 and 409,388.60 is: 614,082.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,993.40 : 1,019,990.10 = 409,388.60 : x
  2. Step 2: Convert to fraction form
    679,993.40/1,019,990.10 = 409,388.60/x
  3. Step 3: Cross multiply
    679,993.40x = 1,019,990.10 × 409,388.60
  4. Step 4: Simplify right side
    679,993.40x = 417,572,319,052.86
  5. Step 5: Solve for x
    x = 417,572,319,052.86/679,993.40
  6. Step 6: Final answer
    x = 614,082.90

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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.