Home / 858,759.70-1,288,139.55-699,327.40

Finding the Fourth Proportional to 858,759.70, 1,288,139.55 and 699,327.40

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Solution

The fourth proportional to 858,759.70, 1,288,139.55 and 699,327.40 is: 1,048,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,759.70 : 1,288,139.55 = 699,327.40 : x
  2. Step 2: Convert to fraction form
    858,759.70/1,288,139.55 = 699,327.40/x
  3. Step 3: Cross multiply
    858,759.70x = 1,288,139.55 × 699,327.40
  4. Step 4: Simplify right side
    858,759.70x = 900,831,282,338.67
  5. Step 5: Solve for x
    x = 900,831,282,338.67/858,759.70
  6. Step 6: Final answer
    x = 1,048,991.10

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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.