Home / 1,981,746.32-2,734,718.36-1,122,312.78

Finding the Fourth Proportional to 1,981,746.32, 2,734,718.36 and 1,122,312.78

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Solution

The fourth proportional to 1,981,746.32, 2,734,718.36 and 1,122,312.78 is: 1,548,739.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,746.32 : 2,734,718.36 = 1,122,312.78 : x
  2. Step 2: Convert to fraction form
    1,981,746.32/2,734,718.36 = 1,122,312.78/x
  3. Step 3: Cross multiply
    1,981,746.32x = 2,734,718.36 × 1,122,312.78
  4. Step 4: Simplify right side
    1,981,746.32x = 3,069,209,365,128.64
  5. Step 5: Solve for x
    x = 3,069,209,365,128.64/1,981,746.32
  6. Step 6: Final answer
    x = 1,548,739.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.