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Finding the Fourth Proportional to 573,058.20, 860,505.30 and 455,705.40

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Solution

The fourth proportional to 573,058.20, 860,505.30 and 455,705.40 is: 684,288.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,058.20 : 860,505.30 = 455,705.40 : x
  2. Step 2: Convert to fraction form
    573,058.20/860,505.30 = 455,705.40/x
  3. Step 3: Cross multiply
    573,058.20x = 860,505.30 × 455,705.40
  4. Step 4: Simplify right side
    573,058.20x = 392,136,911,938.62
  5. Step 5: Solve for x
    x = 392,136,911,938.62/573,058.20
  6. Step 6: Final answer
    x = 684,288.11

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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.