Home / 827,429.48-1,241,156.70-315,122.98

Finding the Fourth Proportional to 827,429.48, 1,241,156.70 and 315,122.98

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Solution

The fourth proportional to 827,429.48, 1,241,156.70 and 315,122.98 is: 472,689.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,429.48 : 1,241,156.70 = 315,122.98 : x
  2. Step 2: Convert to fraction form
    827,429.48/1,241,156.70 = 315,122.98/x
  3. Step 3: Cross multiply
    827,429.48x = 1,241,156.70 × 315,122.98
  4. Step 4: Simplify right side
    827,429.48x = 391,116,991,745.18
  5. Step 5: Solve for x
    x = 391,116,991,745.18/827,429.48
  6. Step 6: Final answer
    x = 472,689.22

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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.