Home / 529,913.71-731,286.21-288,201.70

Finding the Fourth Proportional to 529,913.71, 731,286.21 and 288,201.70

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Solution

The fourth proportional to 529,913.71, 731,286.21 and 288,201.70 is: 397,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,913.71 : 731,286.21 = 288,201.70 : x
  2. Step 2: Convert to fraction form
    529,913.71/731,286.21 = 288,201.70/x
  3. Step 3: Cross multiply
    529,913.71x = 731,286.21 × 288,201.70
  4. Step 4: Simplify right side
    529,913.71x = 210,757,928,908.56
  5. Step 5: Solve for x
    x = 210,757,928,908.56/529,913.71
  6. Step 6: Final answer
    x = 397,721.22

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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.