Home / 489,031.40-733,979.10-289,101.80

Finding the Fourth Proportional to 489,031.40, 733,979.10 and 289,101.80

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Solution

The fourth proportional to 489,031.40, 733,979.10 and 289,101.80 is: 433,908.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,031.40 : 733,979.10 = 289,101.80 : x
  2. Step 2: Convert to fraction form
    489,031.40/733,979.10 = 289,101.80/x
  3. Step 3: Cross multiply
    489,031.40x = 733,979.10 × 289,101.80
  4. Step 4: Simplify right side
    489,031.40x = 212,194,678,972.38
  5. Step 5: Solve for x
    x = 212,194,678,972.38/489,031.40
  6. Step 6: Final answer
    x = 433,908.09

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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.