Home / 1,271,172.79-1,754,231.11-690,407.26

Finding the Fourth Proportional to 1,271,172.79, 1,754,231.11 and 690,407.26

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Solution

The fourth proportional to 1,271,172.79, 1,754,231.11 and 690,407.26 is: 952,768.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,172.79 : 1,754,231.11 = 690,407.26 : x
  2. Step 2: Convert to fraction form
    1,271,172.79/1,754,231.11 = 690,407.26/x
  3. Step 3: Cross multiply
    1,271,172.79x = 1,754,231.11 × 690,407.26
  4. Step 4: Simplify right side
    1,271,172.79x = 1,211,133,894,061.86
  5. Step 5: Solve for x
    x = 1,211,133,894,061.86/1,271,172.79
  6. Step 6: Final answer
    x = 952,768.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.