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Finding the Fourth Proportional to 553,761.51, 764,191.20 and 299,112.71

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Solution

The fourth proportional to 553,761.51, 764,191.20 and 299,112.71 is: 412,775.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,761.51 : 764,191.20 = 299,112.71 : x
  2. Step 2: Convert to fraction form
    553,761.51/764,191.20 = 299,112.71/x
  3. Step 3: Cross multiply
    553,761.51x = 764,191.20 × 299,112.71
  4. Step 4: Simplify right side
    553,761.51x = 228,579,296,969.20
  5. Step 5: Solve for x
    x = 228,579,296,969.20/553,761.51
  6. Step 6: Final answer
    x = 412,775.70

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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.