Home / 420,230.05-629,867.28-369,529.72

Finding the Fourth Proportional to 420,230.05, 629,867.28 and 369,529.72

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Solution

The fourth proportional to 420,230.05, 629,867.28 and 369,529.72 is: 553,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,230.05 : 629,867.28 = 369,529.72 : x
  2. Step 2: Convert to fraction form
    420,230.05/629,867.28 = 369,529.72/x
  3. Step 3: Cross multiply
    420,230.05x = 629,867.28 × 369,529.72
  4. Step 4: Simplify right side
    420,230.05x = 232,754,681,827.96
  5. Step 5: Solve for x
    x = 232,754,681,827.96/420,230.05
  6. Step 6: Final answer
    x = 553,874.43

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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.