Home / 644,078.41-964,622.67-621,658.90

Finding the Fourth Proportional to 644,078.41, 964,622.67 and 621,658.90

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Solution

The fourth proportional to 644,078.41, 964,622.67 and 621,658.90 is: 931,045.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,078.41 : 964,622.67 = 621,658.90 : x
  2. Step 2: Convert to fraction form
    644,078.41/964,622.67 = 621,658.90/x
  3. Step 3: Cross multiply
    644,078.41x = 964,622.67 × 621,658.90
  4. Step 4: Simplify right side
    644,078.41x = 599,666,267,947.26
  5. Step 5: Solve for x
    x = 599,666,267,947.26/644,078.41
  6. Step 6: Final answer
    x = 931,045.44

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1.5x scale

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.