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Finding the Fourth Proportional to 809,910.70, 1,214,866.05 and 360,630.70

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Solution

The fourth proportional to 809,910.70, 1,214,866.05 and 360,630.70 is: 540,946.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,910.70 : 1,214,866.05 = 360,630.70 : x
  2. Step 2: Convert to fraction form
    809,910.70/1,214,866.05 = 360,630.70/x
  3. Step 3: Cross multiply
    809,910.70x = 1,214,866.05 × 360,630.70
  4. Step 4: Simplify right side
    809,910.70x = 438,117,994,017.74
  5. Step 5: Solve for x
    x = 438,117,994,017.74/809,910.70
  6. Step 6: Final answer
    x = 540,946.05

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.