Home / 509,623.70-764,432.85-130,543.70

Finding the Fourth Proportional to 509,623.70, 764,432.85 and 130,543.70

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Solution

The fourth proportional to 509,623.70, 764,432.85 and 130,543.70 is: 195,814.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,623.70 : 764,432.85 = 130,543.70 : x
  2. Step 2: Convert to fraction form
    509,623.70/764,432.85 = 130,543.70/x
  3. Step 3: Cross multiply
    509,623.70x = 764,432.85 × 130,543.70
  4. Step 4: Simplify right side
    509,623.70x = 99,791,892,640.55
  5. Step 5: Solve for x
    x = 99,791,892,640.55/509,623.70
  6. Step 6: Final answer
    x = 195,814.86

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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.