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Finding the Fourth Proportional to 930,878.31, 1,393,716 and 502,880.79

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Solution

The fourth proportional to 930,878.31, 1,393,716 and 502,880.79 is: 752,915.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,878.31 : 1,393,716 = 502,880.79 : x
  2. Step 2: Convert to fraction form
    930,878.31/1,393,716 = 502,880.79/x
  3. Step 3: Cross multiply
    930,878.31x = 1,393,716 × 502,880.79
  4. Step 4: Simplify right side
    930,878.31x = 700,873,003,115.64
  5. Step 5: Solve for x
    x = 700,873,003,115.64/930,878.31
  6. Step 6: Final answer
    x = 752,915.82

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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.