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Finding the Fourth Proportional to 420,227.87, 627,064.28 and 374,937.90

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Solution

The fourth proportional to 420,227.87, 627,064.28 and 374,937.90 is: 559,482.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,227.87 : 627,064.28 = 374,937.90 : x
  2. Step 2: Convert to fraction form
    420,227.87/627,064.28 = 374,937.90/x
  3. Step 3: Cross multiply
    420,227.87x = 627,064.28 × 374,937.90
  4. Step 4: Simplify right side
    420,227.87x = 235,110,163,869.85
  5. Step 5: Solve for x
    x = 235,110,163,869.85/420,227.87
  6. Step 6: Final answer
    x = 559,482.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.