Home / 871,338.48-1,305,115.01-421,115.14

Finding the Fourth Proportional to 871,338.48, 1,305,115.01 and 421,115.14

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Solution

The fourth proportional to 871,338.48, 1,305,115.01 and 421,115.14 is: 630,757.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,338.48 : 1,305,115.01 = 421,115.14 : x
  2. Step 2: Convert to fraction form
    871,338.48/1,305,115.01 = 421,115.14/x
  3. Step 3: Cross multiply
    871,338.48x = 1,305,115.01 × 421,115.14
  4. Step 4: Simplify right side
    871,338.48x = 549,603,696,073.12
  5. Step 5: Solve for x
    x = 549,603,696,073.12/871,338.48
  6. Step 6: Final answer
    x = 630,757.97

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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.