Home / 780,059.04-1,170,520.32-380,703.12

Finding the Fourth Proportional to 780,059.04, 1,170,520.32 and 380,703.12

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Solution

The fourth proportional to 780,059.04, 1,170,520.32 and 380,703.12 is: 571,265.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,059.04 : 1,170,520.32 = 380,703.12 : x
  2. Step 2: Convert to fraction form
    780,059.04/1,170,520.32 = 380,703.12/x
  3. Step 3: Cross multiply
    780,059.04x = 1,170,520.32 × 380,703.12
  4. Step 4: Simplify right side
    780,059.04x = 445,620,737,847.40
  5. Step 5: Solve for x
    x = 445,620,737,847.40/780,059.04
  6. Step 6: Final answer
    x = 571,265.40

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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.