Home / 684,300.20-1,026,450.30-305,220.20

Finding the Fourth Proportional to 684,300.20, 1,026,450.30 and 305,220.20

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Solution

The fourth proportional to 684,300.20, 1,026,450.30 and 305,220.20 is: 457,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,300.20 : 1,026,450.30 = 305,220.20 : x
  2. Step 2: Convert to fraction form
    684,300.20/1,026,450.30 = 305,220.20/x
  3. Step 3: Cross multiply
    684,300.20x = 1,026,450.30 × 305,220.20
  4. Step 4: Simplify right side
    684,300.20x = 313,293,365,856.06
  5. Step 5: Solve for x
    x = 313,293,365,856.06/684,300.20
  6. Step 6: Final answer
    x = 457,830.30

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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.