Home / 784,275.87-1,176,389.17-431,507.29

Finding the Fourth Proportional to 784,275.87, 1,176,389.17 and 431,507.29

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Solution

The fourth proportional to 784,275.87, 1,176,389.17 and 431,507.29 is: 647,247.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,275.87 : 1,176,389.17 = 431,507.29 : x
  2. Step 2: Convert to fraction form
    784,275.87/1,176,389.17 = 431,507.29/x
  3. Step 3: Cross multiply
    784,275.87x = 1,176,389.17 × 431,507.29
  4. Step 4: Simplify right side
    784,275.87x = 507,620,502,732.05
  5. Step 5: Solve for x
    x = 507,620,502,732.05/784,275.87
  6. Step 6: Final answer
    x = 647,247.38

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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.