Home / 762,511.60-1,143,767.40-420,027.40

Finding the Fourth Proportional to 762,511.60, 1,143,767.40 and 420,027.40

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Solution

The fourth proportional to 762,511.60, 1,143,767.40 and 420,027.40 is: 630,041.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,511.60 : 1,143,767.40 = 420,027.40 : x
  2. Step 2: Convert to fraction form
    762,511.60/1,143,767.40 = 420,027.40/x
  3. Step 3: Cross multiply
    762,511.60x = 1,143,767.40 × 420,027.40
  4. Step 4: Simplify right side
    762,511.60x = 480,413,647,226.76
  5. Step 5: Solve for x
    x = 480,413,647,226.76/762,511.60
  6. Step 6: Final answer
    x = 630,041.10

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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.