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Finding the Fourth Proportional to 810,775.68, 1,118,863 and 448,208.88

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Solution

The fourth proportional to 810,775.68, 1,118,863 and 448,208.88 is: 618,524.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,775.68 : 1,118,863 = 448,208.88 : x
  2. Step 2: Convert to fraction form
    810,775.68/1,118,863 = 448,208.88/x
  3. Step 3: Cross multiply
    810,775.68x = 1,118,863 × 448,208.88
  4. Step 4: Simplify right side
    810,775.68x = 501,484,332,103.44
  5. Step 5: Solve for x
    x = 501,484,332,103.44/810,775.68
  6. Step 6: Final answer
    x = 618,524.14

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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.