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Finding the Fourth Proportional to 575,137.10, 862,705.65 and 486,563.60

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Solution

The fourth proportional to 575,137.10, 862,705.65 and 486,563.60 is: 729,845.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,137.10 : 862,705.65 = 486,563.60 : x
  2. Step 2: Convert to fraction form
    575,137.10/862,705.65 = 486,563.60/x
  3. Step 3: Cross multiply
    575,137.10x = 862,705.65 × 486,563.60
  4. Step 4: Simplify right side
    575,137.10x = 419,761,166,804.34
  5. Step 5: Solve for x
    x = 419,761,166,804.34/575,137.10
  6. Step 6: Final answer
    x = 729,845.40

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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.