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Finding the Fourth Proportional to 455,220.20, 681,518.10 and 455,220.20

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Solution

The fourth proportional to 455,220.20, 681,518.10 and 455,220.20 is: 681,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,220.20 : 681,518.10 = 455,220.20 : x
  2. Step 2: Convert to fraction form
    455,220.20/681,518.10 = 455,220.20/x
  3. Step 3: Cross multiply
    455,220.20x = 681,518.10 × 455,220.20
  4. Step 4: Simplify right side
    455,220.20x = 310,240,805,785.62
  5. Step 5: Solve for x
    x = 310,240,805,785.62/455,220.20
  6. Step 6: Final answer
    x = 681,518.10

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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.