Home / 780,690.76-1,170,132.54-359,081.80

Finding the Fourth Proportional to 780,690.76, 1,170,132.54 and 359,081.80

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Solution

The fourth proportional to 780,690.76, 1,170,132.54 and 359,081.80 is: 538,207.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,690.76 : 1,170,132.54 = 359,081.80 : x
  2. Step 2: Convert to fraction form
    780,690.76/1,170,132.54 = 359,081.80/x
  3. Step 3: Cross multiply
    780,690.76x = 1,170,132.54 × 359,081.80
  4. Step 4: Simplify right side
    780,690.76x = 420,173,298,701.77
  5. Step 5: Solve for x
    x = 420,173,298,701.77/780,690.76
  6. Step 6: Final answer
    x = 538,207.09

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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.