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Finding the Fourth Proportional to 656,393.40, 982,621.80 and 617,464.80

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Solution

The fourth proportional to 656,393.40, 982,621.80 and 617,464.80 is: 924,345.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,393.40 : 982,621.80 = 617,464.80 : x
  2. Step 2: Convert to fraction form
    656,393.40/982,621.80 = 617,464.80/x
  3. Step 3: Cross multiply
    656,393.40x = 982,621.80 × 617,464.80
  4. Step 4: Simplify right side
    656,393.40x = 606,734,373,212.64
  5. Step 5: Solve for x
    x = 606,734,373,212.64/656,393.40
  6. Step 6: Final answer
    x = 924,345.63

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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.