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Finding the Fourth Proportional to 687,571.02, 948,830.22 and 381,631.59

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Solution

The fourth proportional to 687,571.02, 948,830.22 and 381,631.59 is: 526,641.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,571.02 : 948,830.22 = 381,631.59 : x
  2. Step 2: Convert to fraction form
    687,571.02/948,830.22 = 381,631.59/x
  3. Step 3: Cross multiply
    687,571.02x = 948,830.22 × 381,631.59
  4. Step 4: Simplify right side
    687,571.02x = 362,103,585,498.65
  5. Step 5: Solve for x
    x = 362,103,585,498.65/687,571.02
  6. Step 6: Final answer
    x = 526,641.72

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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.