Home / 425,845.20-638,767.80-362,519.40

Finding the Fourth Proportional to 425,845.20, 638,767.80 and 362,519.40

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Solution

The fourth proportional to 425,845.20, 638,767.80 and 362,519.40 is: 543,779.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,845.20 : 638,767.80 = 362,519.40 : x
  2. Step 2: Convert to fraction form
    425,845.20/638,767.80 = 362,519.40/x
  3. Step 3: Cross multiply
    425,845.20x = 638,767.80 × 362,519.40
  4. Step 4: Simplify right side
    425,845.20x = 231,565,719,595.32
  5. Step 5: Solve for x
    x = 231,565,719,595.32/425,845.20
  6. Step 6: Final answer
    x = 543,779.10

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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.