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Finding the Fourth Proportional to 573,002.20, 860,421.30 and 455,649.40

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Solution

The fourth proportional to 573,002.20, 860,421.30 and 455,649.40 is: 684,204.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,002.20 : 860,421.30 = 455,649.40 : x
  2. Step 2: Convert to fraction form
    573,002.20/860,421.30 = 455,649.40/x
  3. Step 3: Cross multiply
    573,002.20x = 860,421.30 × 455,649.40
  4. Step 4: Simplify right side
    573,002.20x = 392,050,449,092.22
  5. Step 5: Solve for x
    x = 392,050,449,092.22/573,002.20
  6. Step 6: Final answer
    x = 684,204.09

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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.