Home / 689,102.40-1,033,890.30-310,288.80

Finding the Fourth Proportional to 689,102.40, 1,033,890.30 and 310,288.80

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Solution

The fourth proportional to 689,102.40, 1,033,890.30 and 310,288.80 is: 465,539.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,102.40 : 1,033,890.30 = 310,288.80 : x
  2. Step 2: Convert to fraction form
    689,102.40/1,033,890.30 = 310,288.80/x
  3. Step 3: Cross multiply
    689,102.40x = 1,033,890.30 × 310,288.80
  4. Step 4: Simplify right side
    689,102.40x = 320,804,580,518.64
  5. Step 5: Solve for x
    x = 320,804,580,518.64/689,102.40
  6. Step 6: Final answer
    x = 465,539.78

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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.