Home / 1,311,346.08-1,965,575.52-512,478.72

Finding the Fourth Proportional to 1,311,346.08, 1,965,575.52 and 512,478.72

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Solution

The fourth proportional to 1,311,346.08, 1,965,575.52 and 512,478.72 is: 768,153.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,346.08 : 1,965,575.52 = 512,478.72 : x
  2. Step 2: Convert to fraction form
    1,311,346.08/1,965,575.52 = 512,478.72/x
  3. Step 3: Cross multiply
    1,311,346.08x = 1,965,575.52 × 512,478.72
  4. Step 4: Simplify right side
    1,311,346.08x = 1,007,315,626,552.93
  5. Step 5: Solve for x
    x = 1,007,315,626,552.93/1,311,346.08
  6. Step 6: Final answer
    x = 768,153.92

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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.