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Finding the Fourth Proportional to 492,671.62, 679,903.62 and 285,924.11

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Solution

The fourth proportional to 492,671.62, 679,903.62 and 285,924.11 is: 394,585.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,671.62 : 679,903.62 = 285,924.11 : x
  2. Step 2: Convert to fraction form
    492,671.62/679,903.62 = 285,924.11/x
  3. Step 3: Cross multiply
    492,671.62x = 679,903.62 × 285,924.11
  4. Step 4: Simplify right side
    492,671.62x = 194,400,837,434.28
  5. Step 5: Solve for x
    x = 194,400,837,434.28/492,671.62
  6. Step 6: Final answer
    x = 394,585.01

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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.