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Finding the Fourth Proportional to 656,716.54, 985,130.70 and 207,317.20

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Solution

The fourth proportional to 656,716.54, 985,130.70 and 207,317.20 is: 310,993.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,716.54 : 985,130.70 = 207,317.20 : x
  2. Step 2: Convert to fraction form
    656,716.54/985,130.70 = 207,317.20/x
  3. Step 3: Cross multiply
    656,716.54x = 985,130.70 × 207,317.20
  4. Step 4: Simplify right side
    656,716.54x = 204,234,538,358.04
  5. Step 5: Solve for x
    x = 204,234,538,358.04/656,716.54
  6. Step 6: Final answer
    x = 310,993.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.