Home / 490,821.40-736,232.10-487,322.20

Finding the Fourth Proportional to 490,821.40, 736,232.10 and 487,322.20

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Solution

The fourth proportional to 490,821.40, 736,232.10 and 487,322.20 is: 730,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,821.40 : 736,232.10 = 487,322.20 : x
  2. Step 2: Convert to fraction form
    490,821.40/736,232.10 = 487,322.20/x
  3. Step 3: Cross multiply
    490,821.40x = 736,232.10 × 487,322.20
  4. Step 4: Simplify right side
    490,821.40x = 358,782,246,682.62
  5. Step 5: Solve for x
    x = 358,782,246,682.62/490,821.40
  6. Step 6: Final answer
    x = 730,983.30

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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.