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Finding the Fourth Proportional to 984,671.91, 1,477,007.87 and 310,805.78

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Solution

The fourth proportional to 984,671.91, 1,477,007.87 and 310,805.78 is: 466,208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,671.91 : 1,477,007.87 = 310,805.78 : x
  2. Step 2: Convert to fraction form
    984,671.91/1,477,007.87 = 310,805.78/x
  3. Step 3: Cross multiply
    984,671.91x = 1,477,007.87 × 310,805.78
  4. Step 4: Simplify right side
    984,671.91x = 459,062,574,162.42
  5. Step 5: Solve for x
    x = 459,062,574,162.42/984,671.91
  6. Step 6: Final answer
    x = 466,208.66

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Double scale
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Similar ratio
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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.