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Finding the Fourth Proportional to 945,452.80, 1,415,554.80 and 919,208.80

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Solution

The fourth proportional to 945,452.80, 1,415,554.80 and 919,208.80 is: 1,376,261.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,452.80 : 1,415,554.80 = 919,208.80 : x
  2. Step 2: Convert to fraction form
    945,452.80/1,415,554.80 = 919,208.80/x
  3. Step 3: Cross multiply
    945,452.80x = 1,415,554.80 × 919,208.80
  4. Step 4: Simplify right side
    945,452.80x = 1,301,190,429,042.24
  5. Step 5: Solve for x
    x = 1,301,190,429,042.24/945,452.80
  6. Step 6: Final answer
    x = 1,376,261.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.