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Finding the Fourth Proportional to 553,387.70, 830,081.55 and 488,069.30

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Solution

The fourth proportional to 553,387.70, 830,081.55 and 488,069.30 is: 732,103.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,387.70 : 830,081.55 = 488,069.30 : x
  2. Step 2: Convert to fraction form
    553,387.70/830,081.55 = 488,069.30/x
  3. Step 3: Cross multiply
    553,387.70x = 830,081.55 × 488,069.30
  4. Step 4: Simplify right side
    553,387.70x = 405,137,321,051.42
  5. Step 5: Solve for x
    x = 405,137,321,051.42/553,387.70
  6. Step 6: Final answer
    x = 732,103.95

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Similar ratio
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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.