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Finding the Fourth Proportional to 645,570.92, 890,995.98 and 373,591.96

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Solution

The fourth proportional to 645,570.92, 890,995.98 and 373,591.96 is: 515,619.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,570.92 : 890,995.98 = 373,591.96 : x
  2. Step 2: Convert to fraction form
    645,570.92/890,995.98 = 373,591.96/x
  3. Step 3: Cross multiply
    645,570.92x = 890,995.98 × 373,591.96
  4. Step 4: Simplify right side
    645,570.92x = 332,868,933,693.80
  5. Step 5: Solve for x
    x = 332,868,933,693.80/645,570.92
  6. Step 6: Final answer
    x = 515,619.47

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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.