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Finding the Fourth Proportional to 480,702.42, 721,203.21 and 347,630.76

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Solution

The fourth proportional to 480,702.42, 721,203.21 and 347,630.76 is: 521,554.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,702.42 : 721,203.21 = 347,630.76 : x
  2. Step 2: Convert to fraction form
    480,702.42/721,203.21 = 347,630.76/x
  3. Step 3: Cross multiply
    480,702.42x = 721,203.21 × 347,630.76
  4. Step 4: Simplify right side
    480,702.42x = 250,712,420,006.74
  5. Step 5: Solve for x
    x = 250,712,420,006.74/480,702.42
  6. Step 6: Final answer
    x = 521,554.31

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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.