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Finding the Fourth Proportional to 413,803.70, 620,705.55 and 245,842.10

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Solution

The fourth proportional to 413,803.70, 620,705.55 and 245,842.10 is: 368,763.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,803.70 : 620,705.55 = 245,842.10 : x
  2. Step 2: Convert to fraction form
    413,803.70/620,705.55 = 245,842.10/x
  3. Step 3: Cross multiply
    413,803.70x = 620,705.55 × 245,842.10
  4. Step 4: Simplify right side
    413,803.70x = 152,595,555,893.66
  5. Step 5: Solve for x
    x = 152,595,555,893.66/413,803.70
  6. Step 6: Final answer
    x = 368,763.15

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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.