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Finding the Fourth Proportional to 660,484.26, 911,468.21 and 374,004.27

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Solution

The fourth proportional to 660,484.26, 911,468.21 and 374,004.27 is: 516,125.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,484.26 : 911,468.21 = 374,004.27 : x
  2. Step 2: Convert to fraction form
    660,484.26/911,468.21 = 374,004.27/x
  3. Step 3: Cross multiply
    660,484.26x = 911,468.21 × 374,004.27
  4. Step 4: Simplify right side
    660,484.26x = 340,893,000,639.24
  5. Step 5: Solve for x
    x = 340,893,000,639.24/660,484.26
  6. Step 6: Final answer
    x = 516,125.85

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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.