Home / 761,405.77-1,051,217.74-489,945.43

Finding the Fourth Proportional to 761,405.77, 1,051,217.74 and 489,945.43

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Solution

The fourth proportional to 761,405.77, 1,051,217.74 and 489,945.43 is: 676,432.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,405.77 : 1,051,217.74 = 489,945.43 : x
  2. Step 2: Convert to fraction form
    761,405.77/1,051,217.74 = 489,945.43/x
  3. Step 3: Cross multiply
    761,405.77x = 1,051,217.74 × 489,945.43
  4. Step 4: Simplify right side
    761,405.77x = 515,039,325,039.25
  5. Step 5: Solve for x
    x = 515,039,325,039.25/761,405.77
  6. Step 6: Final answer
    x = 676,432.12

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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.