Home / 762,838.80-1,144,258.20-313,410.30

Finding the Fourth Proportional to 762,838.80, 1,144,258.20 and 313,410.30

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Solution

The fourth proportional to 762,838.80, 1,144,258.20 and 313,410.30 is: 470,115.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,838.80 : 1,144,258.20 = 313,410.30 : x
  2. Step 2: Convert to fraction form
    762,838.80/1,144,258.20 = 313,410.30/x
  3. Step 3: Cross multiply
    762,838.80x = 1,144,258.20 × 313,410.30
  4. Step 4: Simplify right side
    762,838.80x = 358,622,305,739.46
  5. Step 5: Solve for x
    x = 358,622,305,739.46/762,838.80
  6. Step 6: Final answer
    x = 470,115.45

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.