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Finding the Fourth Proportional to 647,442.72, 971,252.64 and 608,076.72

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Solution

The fourth proportional to 647,442.72, 971,252.64 and 608,076.72 is: 912,198.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,442.72 : 971,252.64 = 608,076.72 : x
  2. Step 2: Convert to fraction form
    647,442.72/971,252.64 = 608,076.72/x
  3. Step 3: Cross multiply
    647,442.72x = 971,252.64 × 608,076.72
  4. Step 4: Simplify right side
    647,442.72x = 590,596,119,622.54
  5. Step 5: Solve for x
    x = 590,596,119,622.54/647,442.72
  6. Step 6: Final answer
    x = 912,198.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.