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Finding the Fourth Proportional to 647,785.06, 893,939.07 and 357,411.58

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Solution

The fourth proportional to 647,785.06, 893,939.07 and 357,411.58 is: 493,225.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,785.06 : 893,939.07 = 357,411.58 : x
  2. Step 2: Convert to fraction form
    647,785.06/893,939.07 = 357,411.58/x
  3. Step 3: Cross multiply
    647,785.06x = 893,939.07 × 357,411.58
  4. Step 4: Simplify right side
    647,785.06x = 319,504,175,432.43
  5. Step 5: Solve for x
    x = 319,504,175,432.43/647,785.06
  6. Step 6: Final answer
    x = 493,225.60

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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.