Home / 749,279.70-1,120,639.05-669,891.60

Finding the Fourth Proportional to 749,279.70, 1,120,639.05 and 669,891.60

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Solution

The fourth proportional to 749,279.70, 1,120,639.05 and 669,891.60 is: 1,001,904.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,279.70 : 1,120,639.05 = 669,891.60 : x
  2. Step 2: Convert to fraction form
    749,279.70/1,120,639.05 = 669,891.60/x
  3. Step 3: Cross multiply
    749,279.70x = 1,120,639.05 × 669,891.60
  4. Step 4: Simplify right side
    749,279.70x = 750,706,686,226.98
  5. Step 5: Solve for x
    x = 750,706,686,226.98/749,279.70
  6. Step 6: Final answer
    x = 1,001,904.48

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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.