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Finding the Fourth Proportional to 573,014.20, 860,439.30 and 455,661.40

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Solution

The fourth proportional to 573,014.20, 860,439.30 and 455,661.40 is: 684,222.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,014.20 : 860,439.30 = 455,661.40 : x
  2. Step 2: Convert to fraction form
    573,014.20/860,439.30 = 455,661.40/x
  3. Step 3: Cross multiply
    573,014.20x = 860,439.30 × 455,661.40
  4. Step 4: Simplify right side
    573,014.20x = 392,068,976,053.02
  5. Step 5: Solve for x
    x = 392,068,976,053.02/573,014.20
  6. Step 6: Final answer
    x = 684,222.09

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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.