Home / 684,359.15-944,421.78-378,456.25

Finding the Fourth Proportional to 684,359.15, 944,421.78 and 378,456.25

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Solution

The fourth proportional to 684,359.15, 944,421.78 and 378,456.25 is: 522,273.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,359.15 : 944,421.78 = 378,456.25 : x
  2. Step 2: Convert to fraction form
    684,359.15/944,421.78 = 378,456.25/x
  3. Step 3: Cross multiply
    684,359.15x = 944,421.78 × 378,456.25
  4. Step 4: Simplify right side
    684,359.15x = 357,422,323,977.26
  5. Step 5: Solve for x
    x = 357,422,323,977.26/684,359.15
  6. Step 6: Final answer
    x = 522,273.02

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1.5x scale

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.