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Finding the Fourth Proportional to 647,287.63, 893,573.90 and 501,771.94

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Solution

The fourth proportional to 647,287.63, 893,573.90 and 501,771.94 is: 692,690.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,287.63 : 893,573.90 = 501,771.94 : x
  2. Step 2: Convert to fraction form
    647,287.63/893,573.90 = 501,771.94/x
  3. Step 3: Cross multiply
    647,287.63x = 893,573.90 × 501,771.94
  4. Step 4: Simplify right side
    647,287.63x = 448,370,306,964.97
  5. Step 5: Solve for x
    x = 448,370,306,964.97/647,287.63
  6. Step 6: Final answer
    x = 692,690.99

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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.