Home / 684,138.54-944,029.40-378,173.72

Finding the Fourth Proportional to 684,138.54, 944,029.40 and 378,173.72

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Solution

The fourth proportional to 684,138.54, 944,029.40 and 378,173.72 is: 521,834.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,138.54 : 944,029.40 = 378,173.72 : x
  2. Step 2: Convert to fraction form
    684,138.54/944,029.40 = 378,173.72/x
  3. Step 3: Cross multiply
    684,138.54x = 944,029.40 × 378,173.72
  4. Step 4: Simplify right side
    684,138.54x = 357,007,109,987.37
  5. Step 5: Solve for x
    x = 357,007,109,987.37/684,138.54
  6. Step 6: Final answer
    x = 521,834.52

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Double scale
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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.