Home / 809,398.71-1,116,979.28-446,822.78

Finding the Fourth Proportional to 809,398.71, 1,116,979.28 and 446,822.78

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Solution

The fourth proportional to 809,398.71, 1,116,979.28 and 446,822.78 is: 616,620.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,398.71 : 1,116,979.28 = 446,822.78 : x
  2. Step 2: Convert to fraction form
    809,398.71/1,116,979.28 = 446,822.78/x
  3. Step 3: Cross multiply
    809,398.71x = 1,116,979.28 × 446,822.78
  4. Step 4: Simplify right side
    809,398.71x = 499,091,779,272.99
  5. Step 5: Solve for x
    x = 499,091,779,272.99/809,398.71
  6. Step 6: Final answer
    x = 616,620.43

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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.