Home / 1,253,480.55-1,879,499.79-668,518.53

Finding the Fourth Proportional to 1,253,480.55, 1,879,499.79 and 668,518.53

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Solution

The fourth proportional to 1,253,480.55, 1,879,499.79 and 668,518.53 is: 1,002,393.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253,480.55 : 1,879,499.79 = 668,518.53 : x
  2. Step 2: Convert to fraction form
    1,253,480.55/1,879,499.79 = 668,518.53/x
  3. Step 3: Cross multiply
    1,253,480.55x = 1,879,499.79 × 668,518.53
  4. Step 4: Simplify right side
    1,253,480.55x = 1,256,480,436,746.11
  5. Step 5: Solve for x
    x = 1,256,480,436,746.11/1,253,480.55
  6. Step 6: Final answer
    x = 1,002,393.25

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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.