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Finding the Fourth Proportional to 647,752.68, 893,900.30 and 361,291.32

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Solution

The fourth proportional to 647,752.68, 893,900.30 and 361,291.32 is: 498,582.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,752.68 : 893,900.30 = 361,291.32 : x
  2. Step 2: Convert to fraction form
    647,752.68/893,900.30 = 361,291.32/x
  3. Step 3: Cross multiply
    647,752.68x = 893,900.30 × 361,291.32
  4. Step 4: Simplify right side
    647,752.68x = 322,958,417,528.94
  5. Step 5: Solve for x
    x = 322,958,417,528.94/647,752.68
  6. Step 6: Final answer
    x = 498,582.91

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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.