Home / 780,265.90-1,170,165.57-406,084.78

Finding the Fourth Proportional to 780,265.90, 1,170,165.57 and 406,084.78

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Solution

The fourth proportional to 780,265.90, 1,170,165.57 and 406,084.78 is: 609,005.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,265.90 : 1,170,165.57 = 406,084.78 : x
  2. Step 2: Convert to fraction form
    780,265.90/1,170,165.57 = 406,084.78/x
  3. Step 3: Cross multiply
    780,265.90x = 1,170,165.57 × 406,084.78
  4. Step 4: Simplify right side
    780,265.90x = 475,186,428,057.03
  5. Step 5: Solve for x
    x = 475,186,428,057.03/780,265.90
  6. Step 6: Final answer
    x = 609,005.76

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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.