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Finding the Fourth Proportional to 568,287.47, 784,238.39 and 310,166.80

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Solution

The fourth proportional to 568,287.47, 784,238.39 and 310,166.80 is: 428,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,287.47 : 784,238.39 = 310,166.80 : x
  2. Step 2: Convert to fraction form
    568,287.47/784,238.39 = 310,166.80/x
  3. Step 3: Cross multiply
    568,287.47x = 784,238.39 × 310,166.80
  4. Step 4: Simplify right side
    568,287.47x = 243,244,710,678.27
  5. Step 5: Solve for x
    x = 243,244,710,678.27/568,287.47
  6. Step 6: Final answer
    x = 428,031.10

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1.5x scale

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.