Home / 1,019,972.40-1,529,958.60-420,734.40

Finding the Fourth Proportional to 1,019,972.40, 1,529,958.60 and 420,734.40

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Solution

The fourth proportional to 1,019,972.40, 1,529,958.60 and 420,734.40 is: 631,101.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,972.40 : 1,529,958.60 = 420,734.40 : x
  2. Step 2: Convert to fraction form
    1,019,972.40/1,529,958.60 = 420,734.40/x
  3. Step 3: Cross multiply
    1,019,972.40x = 1,529,958.60 × 420,734.40
  4. Step 4: Simplify right side
    1,019,972.40x = 643,706,213,595.84
  5. Step 5: Solve for x
    x = 643,706,213,595.84/1,019,972.40
  6. Step 6: Final answer
    x = 631,101.60

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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.