Home / 780,280.13-1,170,420.19-189,304.13

Finding the Fourth Proportional to 780,280.13, 1,170,420.19 and 189,304.13

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Solution

The fourth proportional to 780,280.13, 1,170,420.19 and 189,304.13 is: 283,956.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,280.13 : 1,170,420.19 = 189,304.13 : x
  2. Step 2: Convert to fraction form
    780,280.13/1,170,420.19 = 189,304.13/x
  3. Step 3: Cross multiply
    780,280.13x = 1,170,420.19 × 189,304.13
  4. Step 4: Simplify right side
    780,280.13x = 221,565,375,802.39
  5. Step 5: Solve for x
    x = 221,565,375,802.39/780,280.13
  6. Step 6: Final answer
    x = 283,956.19

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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.