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Finding the Fourth Proportional to 492,669.62, 679,900.86 and 285,922.11

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Solution

The fourth proportional to 492,669.62, 679,900.86 and 285,922.11 is: 394,582.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,669.62 : 679,900.86 = 285,922.11 : x
  2. Step 2: Convert to fraction form
    492,669.62/679,900.86 = 285,922.11/x
  3. Step 3: Cross multiply
    492,669.62x = 679,900.86 × 285,922.11
  4. Step 4: Simplify right side
    492,669.62x = 194,398,688,482.02
  5. Step 5: Solve for x
    x = 194,398,688,482.02/492,669.62
  6. Step 6: Final answer
    x = 394,582.26

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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.