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Finding the Fourth Proportional to 647,820.84, 893,994.12 and 361,333.56

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Solution

The fourth proportional to 647,820.84, 893,994.12 and 361,333.56 is: 498,641.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,820.84 : 893,994.12 = 361,333.56 : x
  2. Step 2: Convert to fraction form
    647,820.84/893,994.12 = 361,333.56/x
  3. Step 3: Cross multiply
    647,820.84x = 893,994.12 × 361,333.56
  4. Step 4: Simplify right side
    647,820.84x = 323,030,077,998.67
  5. Step 5: Solve for x
    x = 323,030,077,998.67/647,820.84
  6. Step 6: Final answer
    x = 498,641.07

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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.