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Finding the Fourth Proportional to 409,700.40, 614,550.60 and 339,716.40

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Solution

The fourth proportional to 409,700.40, 614,550.60 and 339,716.40 is: 509,574.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,700.40 : 614,550.60 = 339,716.40 : x
  2. Step 2: Convert to fraction form
    409,700.40/614,550.60 = 339,716.40/x
  3. Step 3: Cross multiply
    409,700.40x = 614,550.60 × 339,716.40
  4. Step 4: Simplify right side
    409,700.40x = 208,772,917,449.84
  5. Step 5: Solve for x
    x = 208,772,917,449.84/409,700.40
  6. Step 6: Final answer
    x = 509,574.60

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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.