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Finding the Fourth Proportional to 647,211.80, 893,156.43 and 360,750.05

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Solution

The fourth proportional to 647,211.80, 893,156.43 and 360,750.05 is: 497,837.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,211.80 : 893,156.43 = 360,750.05 : x
  2. Step 2: Convert to fraction form
    647,211.80/893,156.43 = 360,750.05/x
  3. Step 3: Cross multiply
    647,211.80x = 893,156.43 × 360,750.05
  4. Step 4: Simplify right side
    647,211.80x = 322,206,226,780.32
  5. Step 5: Solve for x
    x = 322,206,226,780.32/647,211.80
  6. Step 6: Final answer
    x = 497,837.38

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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.