Home / 878,439.96-1,212,196.80-485,949.46

Finding the Fourth Proportional to 878,439.96, 1,212,196.80 and 485,949.46

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Solution

The fourth proportional to 878,439.96, 1,212,196.80 and 485,949.46 is: 670,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,439.96 : 1,212,196.80 = 485,949.46 : x
  2. Step 2: Convert to fraction form
    878,439.96/1,212,196.80 = 485,949.46/x
  3. Step 3: Cross multiply
    878,439.96x = 1,212,196.80 × 485,949.46
  4. Step 4: Simplify right side
    878,439.96x = 589,066,380,373.73
  5. Step 5: Solve for x
    x = 589,066,380,373.73/878,439.96
  6. Step 6: Final answer
    x = 670,582.40

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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.