Home / 1,142,242.79-1,711,561.71-421,592.57

Finding the Fourth Proportional to 1,142,242.79, 1,711,561.71 and 421,592.57

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Solution

The fourth proportional to 1,142,242.79, 1,711,561.71 and 421,592.57 is: 631,723.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142,242.79 : 1,711,561.71 = 421,592.57 : x
  2. Step 2: Convert to fraction form
    1,142,242.79/1,711,561.71 = 421,592.57/x
  3. Step 3: Cross multiply
    1,142,242.79x = 1,711,561.71 × 421,592.57
  4. Step 4: Simplify right side
    1,142,242.79x = 721,581,691,474.69
  5. Step 5: Solve for x
    x = 721,581,691,474.69/1,142,242.79
  6. Step 6: Final answer
    x = 631,723.57

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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.