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Finding the Fourth Proportional to 555,079.02, 765,993.66 and 310,057.26

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Solution

The fourth proportional to 555,079.02, 765,993.66 and 310,057.26 is: 427,870.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,079.02 : 765,993.66 = 310,057.26 : x
  2. Step 2: Convert to fraction form
    555,079.02/765,993.66 = 310,057.26/x
  3. Step 3: Cross multiply
    555,079.02x = 765,993.66 × 310,057.26
  4. Step 4: Simplify right side
    555,079.02x = 237,501,895,396.97
  5. Step 5: Solve for x
    x = 237,501,895,396.97/555,079.02
  6. Step 6: Final answer
    x = 427,870.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.