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Finding the Fourth Proportional to 890,907, 1,335,725.64 and 417,334.02

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Solution

The fourth proportional to 890,907, 1,335,725.64 and 417,334.02 is: 625,703.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,907 : 1,335,725.64 = 417,334.02 : x
  2. Step 2: Convert to fraction form
    890,907/1,335,725.64 = 417,334.02/x
  3. Step 3: Cross multiply
    890,907x = 1,335,725.64 × 417,334.02
  4. Step 4: Simplify right side
    890,907x = 557,443,750,958.27
  5. Step 5: Solve for x
    x = 557,443,750,958.27/890,907
  6. Step 6: Final answer
    x = 625,703.64

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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.