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Finding the Fourth Proportional to 647,429.10, 971,374.05 and 624,389.10

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Solution

The fourth proportional to 647,429.10, 971,374.05 and 624,389.10 is: 936,805.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,429.10 : 971,374.05 = 624,389.10 : x
  2. Step 2: Convert to fraction form
    647,429.10/971,374.05 = 624,389.10/x
  3. Step 3: Cross multiply
    647,429.10x = 971,374.05 × 624,389.10
  4. Step 4: Simplify right side
    647,429.10x = 606,515,368,842.86
  5. Step 5: Solve for x
    x = 606,515,368,842.86/647,429.10
  6. Step 6: Final answer
    x = 936,805.85

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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.