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Finding the Fourth Proportional to 573,762.40, 860,643.60 and 345,439.60

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Solution

The fourth proportional to 573,762.40, 860,643.60 and 345,439.60 is: 518,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,762.40 : 860,643.60 = 345,439.60 : x
  2. Step 2: Convert to fraction form
    573,762.40/860,643.60 = 345,439.60/x
  3. Step 3: Cross multiply
    573,762.40x = 860,643.60 × 345,439.60
  4. Step 4: Simplify right side
    573,762.40x = 297,300,380,926.56
  5. Step 5: Solve for x
    x = 297,300,380,926.56/573,762.40
  6. Step 6: Final answer
    x = 518,159.40

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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.