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Finding the Fourth Proportional to 660,671.10, 911,871.27 and 434,337.66

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Solution

The fourth proportional to 660,671.10, 911,871.27 and 434,337.66 is: 599,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,671.10 : 911,871.27 = 434,337.66 : x
  2. Step 2: Convert to fraction form
    660,671.10/911,871.27 = 434,337.66/x
  3. Step 3: Cross multiply
    660,671.10x = 911,871.27 × 434,337.66
  4. Step 4: Simplify right side
    660,671.10x = 396,060,033,633.03
  5. Step 5: Solve for x
    x = 396,060,033,633.03/660,671.10
  6. Step 6: Final answer
    x = 599,481.40

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