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Finding the Fourth Proportional to 703,728.65, 971,249.30 and 445,629.16

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Solution

The fourth proportional to 703,728.65, 971,249.30 and 445,629.16 is: 615,033.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,728.65 : 971,249.30 = 445,629.16 : x
  2. Step 2: Convert to fraction form
    703,728.65/971,249.30 = 445,629.16/x
  3. Step 3: Cross multiply
    703,728.65x = 971,249.30 × 445,629.16
  4. Step 4: Simplify right side
    703,728.65x = 432,817,009,709.59
  5. Step 5: Solve for x
    x = 432,817,009,709.59/703,728.65
  6. Step 6: Final answer
    x = 615,033.95

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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.