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Finding the Fourth Proportional to 660,506.40, 911,498.84 and 374,081.85

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Solution

The fourth proportional to 660,506.40, 911,498.84 and 374,081.85 is: 516,232.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,506.40 : 911,498.84 = 374,081.85 : x
  2. Step 2: Convert to fraction form
    660,506.40/911,498.84 = 374,081.85/x
  3. Step 3: Cross multiply
    660,506.40x = 911,498.84 × 374,081.85
  4. Step 4: Simplify right side
    660,506.40x = 340,975,172,340.05
  5. Step 5: Solve for x
    x = 340,975,172,340.05/660,506.40
  6. Step 6: Final answer
    x = 516,232.96

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1.5x scale

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.