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Finding the Fourth Proportional to 660,419.50, 911,382.46 and 373,995.40

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Solution

The fourth proportional to 660,419.50, 911,382.46 and 373,995.40 is: 516,115.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,419.50 : 911,382.46 = 373,995.40 : x
  2. Step 2: Convert to fraction form
    660,419.50/911,382.46 = 373,995.40/x
  3. Step 3: Cross multiply
    660,419.50x = 911,382.46 × 373,995.40
  4. Step 4: Simplify right side
    660,419.50x = 340,852,847,680.68
  5. Step 5: Solve for x
    x = 340,852,847,680.68/660,419.50
  6. Step 6: Final answer
    x = 516,115.66

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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.