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Finding the Fourth Proportional to 855,728.32, 1,180,860.08 and 468,469.60

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Solution

The fourth proportional to 855,728.32, 1,180,860.08 and 468,469.60 is: 646,463.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,728.32 : 1,180,860.08 = 468,469.60 : x
  2. Step 2: Convert to fraction form
    855,728.32/1,180,860.08 = 468,469.60/x
  3. Step 3: Cross multiply
    855,728.32x = 1,180,860.08 × 468,469.60
  4. Step 4: Simplify right side
    855,728.32x = 553,197,049,333.57
  5. Step 5: Solve for x
    x = 553,197,049,333.57/855,728.32
  6. Step 6: Final answer
    x = 646,463.41

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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.