Home / 644,077.41-964,621.17-621,657.90

Finding the Fourth Proportional to 644,077.41, 964,621.17 and 621,657.90

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Solution

The fourth proportional to 644,077.41, 964,621.17 and 621,657.90 is: 931,043.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,077.41 : 964,621.17 = 621,657.90 : x
  2. Step 2: Convert to fraction form
    644,077.41/964,621.17 = 621,657.90/x
  3. Step 3: Cross multiply
    644,077.41x = 964,621.17 × 621,657.90
  4. Step 4: Simplify right side
    644,077.41x = 599,664,370,837.74
  5. Step 5: Solve for x
    x = 599,664,370,837.74/644,077.41
  6. Step 6: Final answer
    x = 931,043.94

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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.