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Finding the Fourth Proportional to 702,909.70, 1,054,364.55 and 668,503.30

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Solution

The fourth proportional to 702,909.70, 1,054,364.55 and 668,503.30 is: 1,002,754.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,909.70 : 1,054,364.55 = 668,503.30 : x
  2. Step 2: Convert to fraction form
    702,909.70/1,054,364.55 = 668,503.30/x
  3. Step 3: Cross multiply
    702,909.70x = 1,054,364.55 × 668,503.30
  4. Step 4: Simplify right side
    702,909.70x = 704,846,181,078.02
  5. Step 5: Solve for x
    x = 704,846,181,078.02/702,909.70
  6. Step 6: Final answer
    x = 1,002,754.95

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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.