Home / 684,867.96-945,119.34-378,966.60

Finding the Fourth Proportional to 684,867.96, 945,119.34 and 378,966.60

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Solution

The fourth proportional to 684,867.96, 945,119.34 and 378,966.60 is: 522,974.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,867.96 : 945,119.34 = 378,966.60 : x
  2. Step 2: Convert to fraction form
    684,867.96/945,119.34 = 378,966.60/x
  3. Step 3: Cross multiply
    684,867.96x = 945,119.34 × 378,966.60
  4. Step 4: Simplify right side
    684,867.96x = 358,168,662,874.04
  5. Step 5: Solve for x
    x = 358,168,662,874.04/684,867.96
  6. Step 6: Final answer
    x = 522,974.77

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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.