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Finding the Fourth Proportional to 455,205.20, 681,495.60 and 455,205.20

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Solution

The fourth proportional to 455,205.20, 681,495.60 and 455,205.20 is: 681,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,205.20 : 681,495.60 = 455,205.20 : x
  2. Step 2: Convert to fraction form
    455,205.20/681,495.60 = 455,205.20/x
  3. Step 3: Cross multiply
    455,205.20x = 681,495.60 × 455,205.20
  4. Step 4: Simplify right side
    455,205.20x = 310,220,340,897.12
  5. Step 5: Solve for x
    x = 310,220,340,897.12/455,205.20
  6. Step 6: Final answer
    x = 681,495.60

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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.