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Finding the Fourth Proportional to 647,411.10, 971,347.05 and 624,371.10

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Solution

The fourth proportional to 647,411.10, 971,347.05 and 624,371.10 is: 936,778.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,411.10 : 971,347.05 = 624,371.10 : x
  2. Step 2: Convert to fraction form
    647,411.10/971,347.05 = 624,371.10/x
  3. Step 3: Cross multiply
    647,411.10x = 971,347.05 × 624,371.10
  4. Step 4: Simplify right side
    647,411.10x = 606,481,026,090.26
  5. Step 5: Solve for x
    x = 606,481,026,090.26/647,411.10
  6. Step 6: Final answer
    x = 936,778.85

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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.