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Finding the Fourth Proportional to 879,806.70, 1,319,175.45 and 346,713.30

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Solution

The fourth proportional to 879,806.70, 1,319,175.45 and 346,713.30 is: 519,859.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,806.70 : 1,319,175.45 = 346,713.30 : x
  2. Step 2: Convert to fraction form
    879,806.70/1,319,175.45 = 346,713.30/x
  3. Step 3: Cross multiply
    879,806.70x = 1,319,175.45 × 346,713.30
  4. Step 4: Simplify right side
    879,806.70x = 457,375,673,548.49
  5. Step 5: Solve for x
    x = 457,375,673,548.49/879,806.70
  6. Step 6: Final answer
    x = 519,859.28

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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.