Home / 828,780.20-1,243,047.13-229,678.89

Finding the Fourth Proportional to 828,780.20, 1,243,047.13 and 229,678.89

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Solution

The fourth proportional to 828,780.20, 1,243,047.13 and 229,678.89 is: 344,484.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,780.20 : 1,243,047.13 = 229,678.89 : x
  2. Step 2: Convert to fraction form
    828,780.20/1,243,047.13 = 229,678.89/x
  3. Step 3: Cross multiply
    828,780.20x = 1,243,047.13 × 229,678.89
  4. Step 4: Simplify right side
    828,780.20x = 285,501,679,800.46
  5. Step 5: Solve for x
    x = 285,501,679,800.46/828,780.20
  6. Step 6: Final answer
    x = 344,484.20

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1.5x scale

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.