Home / 458,004.20-687,006.30-409,015.40

Finding the Fourth Proportional to 458,004.20, 687,006.30 and 409,015.40

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Solution

The fourth proportional to 458,004.20, 687,006.30 and 409,015.40 is: 613,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,004.20 : 687,006.30 = 409,015.40 : x
  2. Step 2: Convert to fraction form
    458,004.20/687,006.30 = 409,015.40/x
  3. Step 3: Cross multiply
    458,004.20x = 687,006.30 × 409,015.40
  4. Step 4: Simplify right side
    458,004.20x = 280,996,156,597.02
  5. Step 5: Solve for x
    x = 280,996,156,597.02/458,004.20
  6. Step 6: Final answer
    x = 613,523.10

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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.