Home / 780,310.85-1,170,466.25-219,345.35

Finding the Fourth Proportional to 780,310.85, 1,170,466.25 and 219,345.35

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Solution

The fourth proportional to 780,310.85, 1,170,466.25 and 219,345.35 is: 329,018.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,310.85 : 1,170,466.25 = 219,345.35 : x
  2. Step 2: Convert to fraction form
    780,310.85/1,170,466.25 = 219,345.35/x
  3. Step 3: Cross multiply
    780,310.85x = 1,170,466.25 × 219,345.35
  4. Step 4: Simplify right side
    780,310.85x = 256,736,322,320.38
  5. Step 5: Solve for x
    x = 256,736,322,320.38/780,310.85
  6. Step 6: Final answer
    x = 329,018.01

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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.