Home / 870,989.12-1,201,934.16-489,032

Finding the Fourth Proportional to 870,989.12, 1,201,934.16 and 489,032

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Solution

The fourth proportional to 870,989.12, 1,201,934.16 and 489,032 is: 674,846.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,989.12 : 1,201,934.16 = 489,032 : x
  2. Step 2: Convert to fraction form
    870,989.12/1,201,934.16 = 489,032/x
  3. Step 3: Cross multiply
    870,989.12x = 1,201,934.16 × 489,032
  4. Step 4: Simplify right side
    870,989.12x = 587,784,266,133.12
  5. Step 5: Solve for x
    x = 587,784,266,133.12/870,989.12
  6. Step 6: Final answer
    x = 674,846.85

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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.