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Finding the Fourth Proportional to 573,012.70, 860,437.05 and 455,659.90

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Solution

The fourth proportional to 573,012.70, 860,437.05 and 455,659.90 is: 684,219.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,012.70 : 860,437.05 = 455,659.90 : x
  2. Step 2: Convert to fraction form
    573,012.70/860,437.05 = 455,659.90/x
  3. Step 3: Cross multiply
    573,012.70x = 860,437.05 × 455,659.90
  4. Step 4: Simplify right side
    573,012.70x = 392,066,660,159.30
  5. Step 5: Solve for x
    x = 392,066,660,159.30/573,012.70
  6. Step 6: Final answer
    x = 684,219.84

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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.