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Finding the Fourth Proportional to 508,816.40, 702,222.57 and 291,045.20

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Solution

The fourth proportional to 508,816.40, 702,222.57 and 291,045.20 is: 401,674.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,816.40 : 702,222.57 = 291,045.20 : x
  2. Step 2: Convert to fraction form
    508,816.40/702,222.57 = 291,045.20/x
  3. Step 3: Cross multiply
    508,816.40x = 702,222.57 × 291,045.20
  4. Step 4: Simplify right side
    508,816.40x = 204,378,504,819.05
  5. Step 5: Solve for x
    x = 204,378,504,819.05/508,816.40
  6. Step 6: Final answer
    x = 401,674.37

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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.