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Finding the Fourth Proportional to 555,013.74, 765,918.80 and 300,364.86

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Solution

The fourth proportional to 555,013.74, 765,918.80 and 300,364.86 is: 414,503.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,013.74 : 765,918.80 = 300,364.86 : x
  2. Step 2: Convert to fraction form
    555,013.74/765,918.80 = 300,364.86/x
  3. Step 3: Cross multiply
    555,013.74x = 765,918.80 × 300,364.86
  4. Step 4: Simplify right side
    555,013.74x = 230,055,093,133.37
  5. Step 5: Solve for x
    x = 230,055,093,133.37/555,013.74
  6. Step 6: Final answer
    x = 414,503.42

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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.