Home / 514,945.28-771,421.62-289,621.10

Finding the Fourth Proportional to 514,945.28, 771,421.62 and 289,621.10

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Solution

The fourth proportional to 514,945.28, 771,421.62 and 289,621.10 is: 433,871.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,945.28 : 771,421.62 = 289,621.10 : x
  2. Step 2: Convert to fraction form
    514,945.28/771,421.62 = 289,621.10/x
  3. Step 3: Cross multiply
    514,945.28x = 771,421.62 × 289,621.10
  4. Step 4: Simplify right side
    514,945.28x = 223,419,981,162.82
  5. Step 5: Solve for x
    x = 223,419,981,162.82/514,945.28
  6. Step 6: Final answer
    x = 433,871.30

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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.