Home / 1,490,930.20-2,234,645.70-638,000.20

Finding the Fourth Proportional to 1,490,930.20, 2,234,645.70 and 638,000.20

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Solution

The fourth proportional to 1,490,930.20, 2,234,645.70 and 638,000.20 is: 956,251.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,930.20 : 2,234,645.70 = 638,000.20 : x
  2. Step 2: Convert to fraction form
    1,490,930.20/2,234,645.70 = 638,000.20/x
  3. Step 3: Cross multiply
    1,490,930.20x = 2,234,645.70 × 638,000.20
  4. Step 4: Simplify right side
    1,490,930.20x = 1,425,704,403,529.14
  5. Step 5: Solve for x
    x = 1,425,704,403,529.14/1,490,930.20
  6. Step 6: Final answer
    x = 956,251.61

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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.