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Finding the Fourth Proportional to 8,636,880.78, 12,946,650.93 and 2,953,218.06

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Solution

The fourth proportional to 8,636,880.78, 12,946,650.93 and 2,953,218.06 is: 4,426,862.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636,880.78 : 12,946,650.93 = 2,953,218.06 : x
  2. Step 2: Convert to fraction form
    8,636,880.78/12,946,650.93 = 2,953,218.06/x
  3. Step 3: Cross multiply
    8,636,880.78x = 12,946,650.93 × 2,953,218.06
  4. Step 4: Simplify right side
    8,636,880.78x = 38,234,283,342,991.80
  5. Step 5: Solve for x
    x = 38,234,283,342,991.80/8,636,880.78
  6. Step 6: Final answer
    x = 4,426,862.47

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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.