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Finding the Fourth Proportional to 561,652.20, 840,728.70 and 404,188.20

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Solution

The fourth proportional to 561,652.20, 840,728.70 and 404,188.20 is: 605,023.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,652.20 : 840,728.70 = 404,188.20 : x
  2. Step 2: Convert to fraction form
    561,652.20/840,728.70 = 404,188.20/x
  3. Step 3: Cross multiply
    561,652.20x = 840,728.70 × 404,188.20
  4. Step 4: Simplify right side
    561,652.20x = 339,812,619,941.34
  5. Step 5: Solve for x
    x = 339,812,619,941.34/561,652.20
  6. Step 6: Final answer
    x = 605,023.22

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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.