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Finding the Fourth Proportional to 568,407.60, 784,400.83 and 313,756.96

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Solution

The fourth proportional to 568,407.60, 784,400.83 and 313,756.96 is: 432,983.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,407.60 : 784,400.83 = 313,756.96 : x
  2. Step 2: Convert to fraction form
    568,407.60/784,400.83 = 313,756.96/x
  3. Step 3: Cross multiply
    568,407.60x = 784,400.83 × 313,756.96
  4. Step 4: Simplify right side
    568,407.60x = 246,111,219,842.28
  5. Step 5: Solve for x
    x = 246,111,219,842.28/568,407.60
  6. Step 6: Final answer
    x = 432,983.69

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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.