Home / 540,312.03-809,743.55-420,513.62

Finding the Fourth Proportional to 540,312.03, 809,743.55 and 420,513.62

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Solution

The fourth proportional to 540,312.03, 809,743.55 and 420,513.62 is: 630,206.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,312.03 : 809,743.55 = 420,513.62 : x
  2. Step 2: Convert to fraction form
    540,312.03/809,743.55 = 420,513.62/x
  3. Step 3: Cross multiply
    540,312.03x = 809,743.55 × 420,513.62
  4. Step 4: Simplify right side
    540,312.03x = 340,508,185,330.87
  5. Step 5: Solve for x
    x = 340,508,185,330.87/540,312.03
  6. Step 6: Final answer
    x = 630,206.56

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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.