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Finding the Fourth Proportional to 568,220.07, 784,160.22 and 310,113.60

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Solution

The fourth proportional to 568,220.07, 784,160.22 and 310,113.60 is: 427,965.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,220.07 : 784,160.22 = 310,113.60 : x
  2. Step 2: Convert to fraction form
    568,220.07/784,160.22 = 310,113.60/x
  3. Step 3: Cross multiply
    568,220.07x = 784,160.22 × 310,113.60
  4. Step 4: Simplify right side
    568,220.07x = 243,178,748,800.99
  5. Step 5: Solve for x
    x = 243,178,748,800.99/568,220.07
  6. Step 6: Final answer
    x = 427,965.79

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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.