Home / 800,742.64-1,105,038.84-438,198.64

Finding the Fourth Proportional to 800,742.64, 1,105,038.84 and 438,198.64

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Solution

The fourth proportional to 800,742.64, 1,105,038.84 and 438,198.64 is: 604,721.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,742.64 : 1,105,038.84 = 438,198.64 : x
  2. Step 2: Convert to fraction form
    800,742.64/1,105,038.84 = 438,198.64/x
  3. Step 3: Cross multiply
    800,742.64x = 1,105,038.84 × 438,198.64
  4. Step 4: Simplify right side
    800,742.64x = 484,226,516,835.18
  5. Step 5: Solve for x
    x = 484,226,516,835.18/800,742.64
  6. Step 6: Final answer
    x = 604,721.78

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1.5x scale

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.