Home / 705,307.64-973,335.80-399,375.72

Finding the Fourth Proportional to 705,307.64, 973,335.80 and 399,375.72

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Solution

The fourth proportional to 705,307.64, 973,335.80 and 399,375.72 is: 551,144.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,307.64 : 973,335.80 = 399,375.72 : x
  2. Step 2: Convert to fraction form
    705,307.64/973,335.80 = 399,375.72/x
  3. Step 3: Cross multiply
    705,307.64x = 973,335.80 × 399,375.72
  4. Step 4: Simplify right side
    705,307.64x = 388,726,685,926.78
  5. Step 5: Solve for x
    x = 388,726,685,926.78/705,307.64
  6. Step 6: Final answer
    x = 551,144.87

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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.