Home / 1,251,771.55-1,727,445.19-678,811.57

Finding the Fourth Proportional to 1,251,771.55, 1,727,445.19 and 678,811.57

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Solution

The fourth proportional to 1,251,771.55, 1,727,445.19 and 678,811.57 is: 936,760.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251,771.55 : 1,727,445.19 = 678,811.57 : x
  2. Step 2: Convert to fraction form
    1,251,771.55/1,727,445.19 = 678,811.57/x
  3. Step 3: Cross multiply
    1,251,771.55x = 1,727,445.19 × 678,811.57
  4. Step 4: Simplify right side
    1,251,771.55x = 1,172,609,772,875.62
  5. Step 5: Solve for x
    x = 1,172,609,772,875.62/1,251,771.55
  6. Step 6: Final answer
    x = 936,760.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.