Home / 784,274.87-1,176,387.68-431,506.29

Finding the Fourth Proportional to 784,274.87, 1,176,387.68 and 431,506.29

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Solution

The fourth proportional to 784,274.87, 1,176,387.68 and 431,506.29 is: 647,245.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,274.87 : 1,176,387.68 = 431,506.29 : x
  2. Step 2: Convert to fraction form
    784,274.87/1,176,387.68 = 431,506.29/x
  3. Step 3: Cross multiply
    784,274.87x = 1,176,387.68 × 431,506.29
  4. Step 4: Simplify right side
    784,274.87x = 507,618,681,240.98
  5. Step 5: Solve for x
    x = 507,618,681,240.98/784,274.87
  6. Step 6: Final answer
    x = 647,245.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.