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Finding the Fourth Proportional to 552,971.59, 762,918.29 and 450,821.43

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Solution

The fourth proportional to 552,971.59, 762,918.29 and 450,821.43 is: 621,984.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,971.59 : 762,918.29 = 450,821.43 : x
  2. Step 2: Convert to fraction form
    552,971.59/762,918.29 = 450,821.43/x
  3. Step 3: Cross multiply
    552,971.59x = 762,918.29 × 450,821.43
  4. Step 4: Simplify right side
    552,971.59x = 343,939,915,598.01
  5. Step 5: Solve for x
    x = 343,939,915,598.01/552,971.59
  6. Step 6: Final answer
    x = 621,984.79

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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.