Home / 661,885.36-913,495.05-386,333.62

Finding the Fourth Proportional to 661,885.36, 913,495.05 and 386,333.62

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Solution

The fourth proportional to 661,885.36, 913,495.05 and 386,333.62 is: 533,194.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,885.36 : 913,495.05 = 386,333.62 : x
  2. Step 2: Convert to fraction form
    661,885.36/913,495.05 = 386,333.62/x
  3. Step 3: Cross multiply
    661,885.36x = 913,495.05 × 386,333.62
  4. Step 4: Simplify right side
    661,885.36x = 352,913,847,234.84
  5. Step 5: Solve for x
    x = 352,913,847,234.84/661,885.36
  6. Step 6: Final answer
    x = 533,194.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.