Home / 521,776.60-783,615.30-456,458.20

Finding the Fourth Proportional to 521,776.60, 783,615.30 and 456,458.20

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Solution

The fourth proportional to 521,776.60, 783,615.30 and 456,458.20 is: 685,518.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,776.60 : 783,615.30 = 456,458.20 : x
  2. Step 2: Convert to fraction form
    521,776.60/783,615.30 = 456,458.20/x
  3. Step 3: Cross multiply
    521,776.60x = 783,615.30 × 456,458.20
  4. Step 4: Simplify right side
    521,776.60x = 357,687,629,330.46
  5. Step 5: Solve for x
    x = 357,687,629,330.46/521,776.60
  6. Step 6: Final answer
    x = 685,518.72

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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.