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Finding the Fourth Proportional to 647,094.51, 892,951.20 and 356,693.40

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Solution

The fourth proportional to 647,094.51, 892,951.20 and 356,693.40 is: 492,215.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,094.51 : 892,951.20 = 356,693.40 : x
  2. Step 2: Convert to fraction form
    647,094.51/892,951.20 = 356,693.40/x
  3. Step 3: Cross multiply
    647,094.51x = 892,951.20 × 356,693.40
  4. Step 4: Simplify right side
    647,094.51x = 318,509,799,562.08
  5. Step 5: Solve for x
    x = 318,509,799,562.08/647,094.51
  6. Step 6: Final answer
    x = 492,215.27

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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.