Home / 784,629.12-1,082,509.70-512,853.96

Finding the Fourth Proportional to 784,629.12, 1,082,509.70 and 512,853.96

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Solution

The fourth proportional to 784,629.12, 1,082,509.70 and 512,853.96 is: 707,556.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,629.12 : 1,082,509.70 = 512,853.96 : x
  2. Step 2: Convert to fraction form
    784,629.12/1,082,509.70 = 512,853.96/x
  3. Step 3: Cross multiply
    784,629.12x = 1,082,509.70 × 512,853.96
  4. Step 4: Simplify right side
    784,629.12x = 555,169,386,383.41
  5. Step 5: Solve for x
    x = 555,169,386,383.41/784,629.12
  6. Step 6: Final answer
    x = 707,556.44

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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.