Home / 780,147.60-1,170,221.40-528,205.20

Finding the Fourth Proportional to 780,147.60, 1,170,221.40 and 528,205.20

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Solution

The fourth proportional to 780,147.60, 1,170,221.40 and 528,205.20 is: 792,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,147.60 : 1,170,221.40 = 528,205.20 : x
  2. Step 2: Convert to fraction form
    780,147.60/1,170,221.40 = 528,205.20/x
  3. Step 3: Cross multiply
    780,147.60x = 1,170,221.40 × 528,205.20
  4. Step 4: Simplify right side
    780,147.60x = 618,117,028,631.28
  5. Step 5: Solve for x
    x = 618,117,028,631.28/780,147.60
  6. Step 6: Final answer
    x = 792,307.80

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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.