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Finding the Fourth Proportional to 665,622.40, 998,433.60 and 292,374.40

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Solution

The fourth proportional to 665,622.40, 998,433.60 and 292,374.40 is: 438,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,622.40 : 998,433.60 = 292,374.40 : x
  2. Step 2: Convert to fraction form
    665,622.40/998,433.60 = 292,374.40/x
  3. Step 3: Cross multiply
    665,622.40x = 998,433.60 × 292,374.40
  4. Step 4: Simplify right side
    665,622.40x = 291,916,424,739.84
  5. Step 5: Solve for x
    x = 291,916,424,739.84/665,622.40
  6. Step 6: Final answer
    x = 438,561.60

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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.