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Finding the Fourth Proportional to 360,512.70, 540,769.05 and 313,856.70

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Solution

The fourth proportional to 360,512.70, 540,769.05 and 313,856.70 is: 470,785.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,512.70 : 540,769.05 = 313,856.70 : x
  2. Step 2: Convert to fraction form
    360,512.70/540,769.05 = 313,856.70/x
  3. Step 3: Cross multiply
    360,512.70x = 540,769.05 × 313,856.70
  4. Step 4: Simplify right side
    360,512.70x = 169,723,989,495.14
  5. Step 5: Solve for x
    x = 169,723,989,495.14/360,512.70
  6. Step 6: Final answer
    x = 470,785.05

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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.