Home / 871,338.86-1,305,115.58-421,115.52

Finding the Fourth Proportional to 871,338.86, 1,305,115.58 and 421,115.52

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Solution

The fourth proportional to 871,338.86, 1,305,115.58 and 421,115.52 is: 630,758.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,338.86 : 1,305,115.58 = 421,115.52 : x
  2. Step 2: Convert to fraction form
    871,338.86/1,305,115.58 = 421,115.52/x
  3. Step 3: Cross multiply
    871,338.86x = 1,305,115.58 × 421,115.52
  4. Step 4: Simplify right side
    871,338.86x = 549,604,422,368.72
  5. Step 5: Solve for x
    x = 549,604,422,368.72/871,338.86
  6. Step 6: Final answer
    x = 630,758.54

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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.