Home / 684,358.17-944,420.39-378,455.25

Finding the Fourth Proportional to 684,358.17, 944,420.39 and 378,455.25

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Solution

The fourth proportional to 684,358.17, 944,420.39 and 378,455.25 is: 522,271.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,358.17 : 944,420.39 = 378,455.25 : x
  2. Step 2: Convert to fraction form
    684,358.17/944,420.39 = 378,455.25/x
  3. Step 3: Cross multiply
    684,358.17x = 944,420.39 × 378,455.25
  4. Step 4: Simplify right side
    684,358.17x = 357,420,852,910.27
  5. Step 5: Solve for x
    x = 357,420,852,910.27/684,358.17
  6. Step 6: Final answer
    x = 522,271.62

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Double scale
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Similar ratio
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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.