Home / 780,312.60-1,170,468.86-219,347.10

Finding the Fourth Proportional to 780,312.60, 1,170,468.86 and 219,347.10

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Solution

The fourth proportional to 780,312.60, 1,170,468.86 and 219,347.10 is: 329,020.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,312.60 : 1,170,468.86 = 219,347.10 : x
  2. Step 2: Convert to fraction form
    780,312.60/1,170,468.86 = 219,347.10/x
  3. Step 3: Cross multiply
    780,312.60x = 1,170,468.86 × 219,347.10
  4. Step 4: Simplify right side
    780,312.60x = 256,738,950,081.31
  5. Step 5: Solve for x
    x = 256,738,950,081.31/780,312.60
  6. Step 6: Final answer
    x = 329,020.64

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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.