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Finding the Fourth Proportional to 450,017.72, 620,884.14 and 299,140.28

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Solution

The fourth proportional to 450,017.72, 620,884.14 and 299,140.28 is: 412,720.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,017.72 : 620,884.14 = 299,140.28 : x
  2. Step 2: Convert to fraction form
    450,017.72/620,884.14 = 299,140.28/x
  3. Step 3: Cross multiply
    450,017.72x = 620,884.14 × 299,140.28
  4. Step 4: Simplify right side
    450,017.72x = 185,731,455,487.16
  5. Step 5: Solve for x
    x = 185,731,455,487.16/450,017.72
  6. Step 6: Final answer
    x = 412,720.32

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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.