Home / 690,420.10-1,036,018.95-269,641.30

Finding the Fourth Proportional to 690,420.10, 1,036,018.95 and 269,641.30

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Solution

The fourth proportional to 690,420.10, 1,036,018.95 and 269,641.30 is: 404,613.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,420.10 : 1,036,018.95 = 269,641.30 : x
  2. Step 2: Convert to fraction form
    690,420.10/1,036,018.95 = 269,641.30/x
  3. Step 3: Cross multiply
    690,420.10x = 1,036,018.95 × 269,641.30
  4. Step 4: Simplify right side
    690,420.10x = 279,353,496,502.64
  5. Step 5: Solve for x
    x = 279,353,496,502.64/690,420.10
  6. Step 6: Final answer
    x = 404,613.79

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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.