Home / 485,219.60-727,829.40-307,926.80

Finding the Fourth Proportional to 485,219.60, 727,829.40 and 307,926.80

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Solution

The fourth proportional to 485,219.60, 727,829.40 and 307,926.80 is: 461,890.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,219.60 : 727,829.40 = 307,926.80 : x
  2. Step 2: Convert to fraction form
    485,219.60/727,829.40 = 307,926.80/x
  3. Step 3: Cross multiply
    485,219.60x = 727,829.40 × 307,926.80
  4. Step 4: Simplify right side
    485,219.60x = 224,118,178,087.92
  5. Step 5: Solve for x
    x = 224,118,178,087.92/485,219.60
  6. Step 6: Final answer
    x = 461,890.20

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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.