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Finding the Fourth Proportional to 568,387.32, 784,381.06 and 313,738.76

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Solution

The fourth proportional to 568,387.32, 784,381.06 and 313,738.76 is: 432,963.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,387.32 : 784,381.06 = 313,738.76 : x
  2. Step 2: Convert to fraction form
    568,387.32/784,381.06 = 313,738.76/x
  3. Step 3: Cross multiply
    568,387.32x = 784,381.06 × 313,738.76
  4. Step 4: Simplify right side
    568,387.32x = 246,090,741,131.89
  5. Step 5: Solve for x
    x = 246,090,741,131.89/568,387.32
  6. Step 6: Final answer
    x = 432,963.11

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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.