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Finding the Fourth Proportional to 480,338.60, 720,506.88 and 451,109.32

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Solution

The fourth proportional to 480,338.60, 720,506.88 and 451,109.32 is: 676,663.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,338.60 : 720,506.88 = 451,109.32 : x
  2. Step 2: Convert to fraction form
    480,338.60/720,506.88 = 451,109.32/x
  3. Step 3: Cross multiply
    480,338.60x = 720,506.88 × 451,109.32
  4. Step 4: Simplify right side
    480,338.60x = 325,027,368,692.12
  5. Step 5: Solve for x
    x = 325,027,368,692.12/480,338.60
  6. Step 6: Final answer
    x = 676,663.02

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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.