Home / 687,769.28-1,031,183.36-350,156.64

Finding the Fourth Proportional to 687,769.28, 1,031,183.36 and 350,156.64

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Solution

The fourth proportional to 687,769.28, 1,031,183.36 and 350,156.64 is: 524,995.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,769.28 : 1,031,183.36 = 350,156.64 : x
  2. Step 2: Convert to fraction form
    687,769.28/1,031,183.36 = 350,156.64/x
  3. Step 3: Cross multiply
    687,769.28x = 1,031,183.36 × 350,156.64
  4. Step 4: Simplify right side
    687,769.28x = 361,075,700,561.51
  5. Step 5: Solve for x
    x = 361,075,700,561.51/687,769.28
  6. Step 6: Final answer
    x = 524,995.39

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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.