Home / 818,078.48-1,227,412.92-285,678.08

Finding the Fourth Proportional to 818,078.48, 1,227,412.92 and 285,678.08

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Solution

The fourth proportional to 818,078.48, 1,227,412.92 and 285,678.08 is: 428,620.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,078.48 : 1,227,412.92 = 285,678.08 : x
  2. Step 2: Convert to fraction form
    818,078.48/1,227,412.92 = 285,678.08/x
  3. Step 3: Cross multiply
    818,078.48x = 1,227,412.92 × 285,678.08
  4. Step 4: Simplify right side
    818,078.48x = 350,644,966,352.79
  5. Step 5: Solve for x
    x = 350,644,966,352.79/818,078.48
  6. Step 6: Final answer
    x = 428,620.21

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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.