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Finding the Fourth Proportional to 590,429.80, 885,644.70 and 340,820.20

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Solution

The fourth proportional to 590,429.80, 885,644.70 and 340,820.20 is: 511,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,429.80 : 885,644.70 = 340,820.20 : x
  2. Step 2: Convert to fraction form
    590,429.80/885,644.70 = 340,820.20/x
  3. Step 3: Cross multiply
    590,429.80x = 885,644.70 × 340,820.20
  4. Step 4: Simplify right side
    590,429.80x = 301,845,603,782.94
  5. Step 5: Solve for x
    x = 301,845,603,782.94/590,429.80
  6. Step 6: Final answer
    x = 511,230.30

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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.