Home / 810,479.42-1,214,632.38-630,781.80

Finding the Fourth Proportional to 810,479.42, 1,214,632.38 and 630,781.80

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Solution

The fourth proportional to 810,479.42, 1,214,632.38 and 630,781.80 is: 945,326.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,479.42 : 1,214,632.38 = 630,781.80 : x
  2. Step 2: Convert to fraction form
    810,479.42/1,214,632.38 = 630,781.80/x
  3. Step 3: Cross multiply
    810,479.42x = 1,214,632.38 × 630,781.80
  4. Step 4: Simplify right side
    810,479.42x = 766,167,998,994.68
  5. Step 5: Solve for x
    x = 766,167,998,994.68/810,479.42
  6. Step 6: Final answer
    x = 945,326.90

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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.