Home / 458,979.83-687,977.53-221,996.51

Finding the Fourth Proportional to 458,979.83, 687,977.53 and 221,996.51

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Solution

The fourth proportional to 458,979.83, 687,977.53 and 221,996.51 is: 332,756.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,979.83 : 687,977.53 = 221,996.51 : x
  2. Step 2: Convert to fraction form
    458,979.83/687,977.53 = 221,996.51/x
  3. Step 3: Cross multiply
    458,979.83x = 687,977.53 × 221,996.51
  4. Step 4: Simplify right side
    458,979.83x = 152,728,610,618.42
  5. Step 5: Solve for x
    x = 152,728,610,618.42/458,979.83
  6. Step 6: Final answer
    x = 332,756.69

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1.5x scale

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.