Home / 485,190.40-727,785.60-298,307.20

Finding the Fourth Proportional to 485,190.40, 727,785.60 and 298,307.20

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Solution

The fourth proportional to 485,190.40, 727,785.60 and 298,307.20 is: 447,460.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,190.40 : 727,785.60 = 298,307.20 : x
  2. Step 2: Convert to fraction form
    485,190.40/727,785.60 = 298,307.20/x
  3. Step 3: Cross multiply
    485,190.40x = 727,785.60 × 298,307.20
  4. Step 4: Simplify right side
    485,190.40x = 217,103,684,536.32
  5. Step 5: Solve for x
    x = 217,103,684,536.32/485,190.40
  6. Step 6: Final answer
    x = 447,460.80

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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.