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Finding the Fourth Proportional to 509,378.56, 702,986.24 and 283,069.44

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Solution

The fourth proportional to 509,378.56, 702,986.24 and 283,069.44 is: 390,660.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,378.56 : 702,986.24 = 283,069.44 : x
  2. Step 2: Convert to fraction form
    509,378.56/702,986.24 = 283,069.44/x
  3. Step 3: Cross multiply
    509,378.56x = 702,986.24 × 283,069.44
  4. Step 4: Simplify right side
    509,378.56x = 198,993,921,284.51
  5. Step 5: Solve for x
    x = 198,993,921,284.51/509,378.56
  6. Step 6: Final answer
    x = 390,660.18

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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.