Home / 763,800.18-1,054,060.92-419,640.54

Finding the Fourth Proportional to 763,800.18, 1,054,060.92 and 419,640.54

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Solution

The fourth proportional to 763,800.18, 1,054,060.92 and 419,640.54 is: 579,113.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,800.18 : 1,054,060.92 = 419,640.54 : x
  2. Step 2: Convert to fraction form
    763,800.18/1,054,060.92 = 419,640.54/x
  3. Step 3: Cross multiply
    763,800.18x = 1,054,060.92 × 419,640.54
  4. Step 4: Simplify right side
    763,800.18x = 442,326,693,661.70
  5. Step 5: Solve for x
    x = 442,326,693,661.70/763,800.18
  6. Step 6: Final answer
    x = 579,113.10

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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.