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Finding the Fourth Proportional to 554,755.40, 765,560.79 and 300,106.52

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Solution

The fourth proportional to 554,755.40, 765,560.79 and 300,106.52 is: 414,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,755.40 : 765,560.79 = 300,106.52 : x
  2. Step 2: Convert to fraction form
    554,755.40/765,560.79 = 300,106.52/x
  3. Step 3: Cross multiply
    554,755.40x = 765,560.79 × 300,106.52
  4. Step 4: Simplify right side
    554,755.40x = 229,749,784,535.35
  5. Step 5: Solve for x
    x = 229,749,784,535.35/554,755.40
  6. Step 6: Final answer
    x = 414,146.10

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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.