Home / 743,321.80-1,114,982.70-477,601.30

Finding the Fourth Proportional to 743,321.80, 1,114,982.70 and 477,601.30

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Solution

The fourth proportional to 743,321.80, 1,114,982.70 and 477,601.30 is: 716,401.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,321.80 : 1,114,982.70 = 477,601.30 : x
  2. Step 2: Convert to fraction form
    743,321.80/1,114,982.70 = 477,601.30/x
  3. Step 3: Cross multiply
    743,321.80x = 1,114,982.70 × 477,601.30
  4. Step 4: Simplify right side
    743,321.80x = 532,517,186,997.51
  5. Step 5: Solve for x
    x = 532,517,186,997.51/743,321.80
  6. Step 6: Final answer
    x = 716,401.95

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Double scale
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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.