Home / 770,015.60-1,152,836.40-728,122.40

Finding the Fourth Proportional to 770,015.60, 1,152,836.40 and 728,122.40

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Solution

The fourth proportional to 770,015.60, 1,152,836.40 and 728,122.40 is: 1,090,115.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,015.60 : 1,152,836.40 = 728,122.40 : x
  2. Step 2: Convert to fraction form
    770,015.60/1,152,836.40 = 728,122.40/x
  3. Step 3: Cross multiply
    770,015.60x = 1,152,836.40 × 728,122.40
  4. Step 4: Simplify right side
    770,015.60x = 839,406,006,375.36
  5. Step 5: Solve for x
    x = 839,406,006,375.36/770,015.60
  6. Step 6: Final answer
    x = 1,090,115.59

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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.