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Finding the Fourth Proportional to 559,756.41, 772,456.01 and 305,108.61

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Solution

The fourth proportional to 559,756.41, 772,456.01 and 305,108.61 is: 421,045.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,756.41 : 772,456.01 = 305,108.61 : x
  2. Step 2: Convert to fraction form
    559,756.41/772,456.01 = 305,108.61/x
  3. Step 3: Cross multiply
    559,756.41x = 772,456.01 × 305,108.61
  4. Step 4: Simplify right side
    559,756.41x = 235,682,977,971.70
  5. Step 5: Solve for x
    x = 235,682,977,971.70/559,756.41
  6. Step 6: Final answer
    x = 421,045.61

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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.