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Finding the Fourth Proportional to 556,091.80, 834,137.70 and 319,895.80

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Solution

The fourth proportional to 556,091.80, 834,137.70 and 319,895.80 is: 479,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,091.80 : 834,137.70 = 319,895.80 : x
  2. Step 2: Convert to fraction form
    556,091.80/834,137.70 = 319,895.80/x
  3. Step 3: Cross multiply
    556,091.80x = 834,137.70 × 319,895.80
  4. Step 4: Simplify right side
    556,091.80x = 266,837,146,851.66
  5. Step 5: Solve for x
    x = 266,837,146,851.66/556,091.80
  6. Step 6: Final answer
    x = 479,843.70

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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.