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Finding the Fourth Proportional to 1,008,990, 1,392,409.08 and 550,109.52

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Solution

The fourth proportional to 1,008,990, 1,392,409.08 and 550,109.52 is: 759,152.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,990 : 1,392,409.08 = 550,109.52 : x
  2. Step 2: Convert to fraction form
    1,008,990/1,392,409.08 = 550,109.52/x
  3. Step 3: Cross multiply
    1,008,990x = 1,392,409.08 × 550,109.52
  4. Step 4: Simplify right side
    1,008,990x = 765,977,490,642.44
  5. Step 5: Solve for x
    x = 765,977,490,642.44/1,008,990
  6. Step 6: Final answer
    x = 759,152.71

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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.