Home / 1,263,176.80-1,894,781.40-421,728.55

Finding the Fourth Proportional to 1,263,176.80, 1,894,781.40 and 421,728.55

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Solution

The fourth proportional to 1,263,176.80, 1,894,781.40 and 421,728.55 is: 632,598.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,176.80 : 1,894,781.40 = 421,728.55 : x
  2. Step 2: Convert to fraction form
    1,263,176.80/1,894,781.40 = 421,728.55/x
  3. Step 3: Cross multiply
    1,263,176.80x = 1,894,781.40 × 421,728.55
  4. Step 4: Simplify right side
    1,263,176.80x = 799,083,412,388.97
  5. Step 5: Solve for x
    x = 799,083,412,388.97/1,263,176.80
  6. Step 6: Final answer
    x = 632,598.23

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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.