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Finding the Fourth Proportional to 553,390.70, 830,086.05 and 488,072.30

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Solution

The fourth proportional to 553,390.70, 830,086.05 and 488,072.30 is: 732,108.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,390.70 : 830,086.05 = 488,072.30 : x
  2. Step 2: Convert to fraction form
    553,390.70/830,086.05 = 488,072.30/x
  3. Step 3: Cross multiply
    553,390.70x = 830,086.05 × 488,072.30
  4. Step 4: Simplify right side
    553,390.70x = 405,142,007,621.42
  5. Step 5: Solve for x
    x = 405,142,007,621.42/553,390.70
  6. Step 6: Final answer
    x = 732,108.45

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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.