Home / 780,365.40-1,170,548.10-219,399.90

Finding the Fourth Proportional to 780,365.40, 1,170,548.10 and 219,399.90

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Solution

The fourth proportional to 780,365.40, 1,170,548.10 and 219,399.90 is: 329,099.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,365.40 : 1,170,548.10 = 219,399.90 : x
  2. Step 2: Convert to fraction form
    780,365.40/1,170,548.10 = 219,399.90/x
  3. Step 3: Cross multiply
    780,365.40x = 1,170,548.10 × 219,399.90
  4. Step 4: Simplify right side
    780,365.40x = 256,818,136,085.19
  5. Step 5: Solve for x
    x = 256,818,136,085.19/780,365.40
  6. Step 6: Final answer
    x = 329,099.85

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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.