Home / 780,057.20-1,170,085.80-479,563.40

Finding the Fourth Proportional to 780,057.20, 1,170,085.80 and 479,563.40

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Solution

The fourth proportional to 780,057.20, 1,170,085.80 and 479,563.40 is: 719,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,057.20 : 1,170,085.80 = 479,563.40 : x
  2. Step 2: Convert to fraction form
    780,057.20/1,170,085.80 = 479,563.40/x
  3. Step 3: Cross multiply
    780,057.20x = 1,170,085.80 × 479,563.40
  4. Step 4: Simplify right side
    780,057.20x = 561,130,324,539.72
  5. Step 5: Solve for x
    x = 561,130,324,539.72/780,057.20
  6. Step 6: Final answer
    x = 719,345.10

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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.