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Finding the Fourth Proportional to 890,884.88, 1,335,692.72 and 417,311.92

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Solution

The fourth proportional to 890,884.88, 1,335,692.72 and 417,311.92 is: 625,670.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,884.88 : 1,335,692.72 = 417,311.92 : x
  2. Step 2: Convert to fraction form
    890,884.88/1,335,692.72 = 417,311.92/x
  3. Step 3: Cross multiply
    890,884.88x = 1,335,692.72 × 417,311.92
  4. Step 4: Simplify right side
    890,884.88x = 557,400,493,513.22
  5. Step 5: Solve for x
    x = 557,400,493,513.22/890,884.88
  6. Step 6: Final answer
    x = 625,670.62

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1.5x scale

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.