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Finding the Fourth Proportional to 568,215.74, 784,154.28 and 310,109.34

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Solution

The fourth proportional to 568,215.74, 784,154.28 and 310,109.34 is: 427,959.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,215.74 : 784,154.28 = 310,109.34 : x
  2. Step 2: Convert to fraction form
    568,215.74/784,154.28 = 310,109.34/x
  3. Step 3: Cross multiply
    568,215.74x = 784,154.28 × 310,109.34
  4. Step 4: Simplify right side
    568,215.74x = 243,173,566,228.98
  5. Step 5: Solve for x
    x = 243,173,566,228.98/568,215.74
  6. Step 6: Final answer
    x = 427,959.93

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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.