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Finding the Fourth Proportional to 617,918.40, 926,877.60 and 551,433.60

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Solution

The fourth proportional to 617,918.40, 926,877.60 and 551,433.60 is: 827,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,918.40 : 926,877.60 = 551,433.60 : x
  2. Step 2: Convert to fraction form
    617,918.40/926,877.60 = 551,433.60/x
  3. Step 3: Cross multiply
    617,918.40x = 926,877.60 × 551,433.60
  4. Step 4: Simplify right side
    617,918.40x = 511,111,451,727.36
  5. Step 5: Solve for x
    x = 511,111,451,727.36/617,918.40
  6. Step 6: Final answer
    x = 827,150.40

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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.