Home / 689,311.60-1,033,999.80-216,012.40

Finding the Fourth Proportional to 689,311.60, 1,033,999.80 and 216,012.40

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Solution

The fourth proportional to 689,311.60, 1,033,999.80 and 216,012.40 is: 324,028.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,311.60 : 1,033,999.80 = 216,012.40 : x
  2. Step 2: Convert to fraction form
    689,311.60/1,033,999.80 = 216,012.40/x
  3. Step 3: Cross multiply
    689,311.60x = 1,033,999.80 × 216,012.40
  4. Step 4: Simplify right side
    689,311.60x = 223,356,778,397.52
  5. Step 5: Solve for x
    x = 223,356,778,397.52/689,311.60
  6. Step 6: Final answer
    x = 324,028.75

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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.