Home / 780,061.20-1,170,091.80-479,567.40

Finding the Fourth Proportional to 780,061.20, 1,170,091.80 and 479,567.40

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Solution

The fourth proportional to 780,061.20, 1,170,091.80 and 479,567.40 is: 719,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,061.20 : 1,170,091.80 = 479,567.40 : x
  2. Step 2: Convert to fraction form
    780,061.20/1,170,091.80 = 479,567.40/x
  3. Step 3: Cross multiply
    780,061.20x = 1,170,091.80 × 479,567.40
  4. Step 4: Simplify right side
    780,061.20x = 561,137,882,287.32
  5. Step 5: Solve for x
    x = 561,137,882,287.32/780,061.20
  6. Step 6: Final answer
    x = 719,351.10

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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.