Home / 871,369.88-1,305,161.89-421,146.59

Finding the Fourth Proportional to 871,369.88, 1,305,161.89 and 421,146.59

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Solution

The fourth proportional to 871,369.88, 1,305,161.89 and 421,146.59 is: 630,805.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,369.88 : 1,305,161.89 = 421,146.59 : x
  2. Step 2: Convert to fraction form
    871,369.88/1,305,161.89 = 421,146.59/x
  3. Step 3: Cross multiply
    871,369.88x = 1,305,161.89 × 421,146.59
  4. Step 4: Simplify right side
    871,369.88x = 549,664,471,792.78
  5. Step 5: Solve for x
    x = 549,664,471,792.78/871,369.88
  6. Step 6: Final answer
    x = 630,805.00

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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.