Home / 623,603.48-860,580.66-378,517.40

Finding the Fourth Proportional to 623,603.48, 860,580.66 and 378,517.40

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Solution

The fourth proportional to 623,603.48, 860,580.66 and 378,517.40 is: 522,358.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,603.48 : 860,580.66 = 378,517.40 : x
  2. Step 2: Convert to fraction form
    623,603.48/860,580.66 = 378,517.40/x
  3. Step 3: Cross multiply
    623,603.48x = 860,580.66 × 378,517.40
  4. Step 4: Simplify right side
    623,603.48x = 325,744,753,913.48
  5. Step 5: Solve for x
    x = 325,744,753,913.48/623,603.48
  6. Step 6: Final answer
    x = 522,358.78

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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.