Home / 540,315.03-809,748.03-420,516.63

Finding the Fourth Proportional to 540,315.03, 809,748.03 and 420,516.63

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Solution

The fourth proportional to 540,315.03, 809,748.03 and 420,516.63 is: 630,211.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,315.03 : 809,748.03 = 420,516.63 : x
  2. Step 2: Convert to fraction form
    540,315.03/809,748.03 = 420,516.63/x
  3. Step 3: Cross multiply
    540,315.03x = 809,748.03 × 420,516.63
  4. Step 4: Simplify right side
    540,315.03x = 340,512,512,724.74
  5. Step 5: Solve for x
    x = 340,512,512,724.74/540,315.03
  6. Step 6: Final answer
    x = 630,211.07

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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.