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Finding the Fourth Proportional to 627,466.70, 865,901.70 and 355,586.40

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Solution

The fourth proportional to 627,466.70, 865,901.70 and 355,586.40 is: 490,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,466.70 : 865,901.70 = 355,586.40 : x
  2. Step 2: Convert to fraction form
    627,466.70/865,901.70 = 355,586.40/x
  3. Step 3: Cross multiply
    627,466.70x = 865,901.70 × 355,586.40
  4. Step 4: Simplify right side
    627,466.70x = 307,902,868,256.88
  5. Step 5: Solve for x
    x = 307,902,868,256.88/627,466.70
  6. Step 6: Final answer
    x = 490,707.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.