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Finding the Fourth Proportional to 554,976.90, 765,868.08 and 300,328.08

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Solution

The fourth proportional to 554,976.90, 765,868.08 and 300,328.08 is: 414,452.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,976.90 : 765,868.08 = 300,328.08 : x
  2. Step 2: Convert to fraction form
    554,976.90/765,868.08 = 300,328.08/x
  3. Step 3: Cross multiply
    554,976.90x = 765,868.08 × 300,328.08
  4. Step 4: Simplify right side
    554,976.90x = 230,011,689,999.69
  5. Step 5: Solve for x
    x = 230,011,689,999.69/554,976.90
  6. Step 6: Final answer
    x = 414,452.73

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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.