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Finding the Fourth Proportional to 555,345.60, 832,362.30 and 414,940.20

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Solution

The fourth proportional to 555,345.60, 832,362.30 and 414,940.20 is: 621,920.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,345.60 : 832,362.30 = 414,940.20 : x
  2. Step 2: Convert to fraction form
    555,345.60/832,362.30 = 414,940.20/x
  3. Step 3: Cross multiply
    555,345.60x = 832,362.30 × 414,940.20
  4. Step 4: Simplify right side
    555,345.60x = 345,380,579,234.46
  5. Step 5: Solve for x
    x = 345,380,579,234.46/555,345.60
  6. Step 6: Final answer
    x = 621,920.08

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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.