Home / 521,785.60-783,628.80-456,467.20

Finding the Fourth Proportional to 521,785.60, 783,628.80 and 456,467.20

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Solution

The fourth proportional to 521,785.60, 783,628.80 and 456,467.20 is: 685,532.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,785.60 : 783,628.80 = 456,467.20 : x
  2. Step 2: Convert to fraction form
    521,785.60/783,628.80 = 456,467.20/x
  3. Step 3: Cross multiply
    521,785.60x = 783,628.80 × 456,467.20
  4. Step 4: Simplify right side
    521,785.60x = 357,700,844,175.36
  5. Step 5: Solve for x
    x = 357,700,844,175.36/521,785.60
  6. Step 6: Final answer
    x = 685,532.23

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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.