Home / 780,150.85-1,170,226.28-479,657.05

Finding the Fourth Proportional to 780,150.85, 1,170,226.28 and 479,657.05

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Solution

The fourth proportional to 780,150.85, 1,170,226.28 and 479,657.05 is: 719,485.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,150.85 : 1,170,226.28 = 479,657.05 : x
  2. Step 2: Convert to fraction form
    780,150.85/1,170,226.28 = 479,657.05/x
  3. Step 3: Cross multiply
    780,150.85x = 1,170,226.28 × 479,657.05
  4. Step 4: Simplify right side
    780,150.85x = 561,307,282,898.99
  5. Step 5: Solve for x
    x = 561,307,282,898.99/780,150.85
  6. Step 6: Final answer
    x = 719,485.58

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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.