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Finding the Fourth Proportional to 548,612.20, 822,918.30 and 455,300.20

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Solution

The fourth proportional to 548,612.20, 822,918.30 and 455,300.20 is: 682,950.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,612.20 : 822,918.30 = 455,300.20 : x
  2. Step 2: Convert to fraction form
    548,612.20/822,918.30 = 455,300.20/x
  3. Step 3: Cross multiply
    548,612.20x = 822,918.30 × 455,300.20
  4. Step 4: Simplify right side
    548,612.20x = 374,674,866,573.66
  5. Step 5: Solve for x
    x = 374,674,866,573.66/548,612.20
  6. Step 6: Final answer
    x = 682,950.30

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Half scale
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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.