Home / 513,723.70-709,223.75-309,826.49

Finding the Fourth Proportional to 513,723.70, 709,223.75 and 309,826.49

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Solution

The fourth proportional to 513,723.70, 709,223.75 and 309,826.49 is: 427,732.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,723.70 : 709,223.75 = 309,826.49 : x
  2. Step 2: Convert to fraction form
    513,723.70/709,223.75 = 309,826.49/x
  3. Step 3: Cross multiply
    513,723.70x = 709,223.75 × 309,826.49
  4. Step 4: Simplify right side
    513,723.70x = 219,736,305,087.14
  5. Step 5: Solve for x
    x = 219,736,305,087.14/513,723.70
  6. Step 6: Final answer
    x = 427,732.47

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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.