Home / 780,280.50-1,170,420.75-189,304.50

Finding the Fourth Proportional to 780,280.50, 1,170,420.75 and 189,304.50

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Solution

The fourth proportional to 780,280.50, 1,170,420.75 and 189,304.50 is: 283,956.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,280.50 : 1,170,420.75 = 189,304.50 : x
  2. Step 2: Convert to fraction form
    780,280.50/1,170,420.75 = 189,304.50/x
  3. Step 3: Cross multiply
    780,280.50x = 1,170,420.75 × 189,304.50
  4. Step 4: Simplify right side
    780,280.50x = 221,565,914,868.38
  5. Step 5: Solve for x
    x = 221,565,914,868.38/780,280.50
  6. Step 6: Final answer
    x = 283,956.75

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Double scale
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Similar ratio
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1.5x scale

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.