Home / 985,660.65-1,478,673.50-311,911.56

Finding the Fourth Proportional to 985,660.65, 1,478,673.50 and 311,911.56

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Solution

The fourth proportional to 985,660.65, 1,478,673.50 and 311,911.56 is: 467,925.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,660.65 : 1,478,673.50 = 311,911.56 : x
  2. Step 2: Convert to fraction form
    985,660.65/1,478,673.50 = 311,911.56/x
  3. Step 3: Cross multiply
    985,660.65x = 1,478,673.50 × 311,911.56
  4. Step 4: Simplify right side
    985,660.65x = 461,215,356,556.10
  5. Step 5: Solve for x
    x = 461,215,356,556.10/985,660.65
  6. Step 6: Final answer
    x = 467,925.10

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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.