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Finding the Fourth Proportional to 10,890,000.40, 16,346,810.40 and 6,851,048.80

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Solution

The fourth proportional to 10,890,000.40, 16,346,810.40 and 6,851,048.80 is: 10,284,002.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890,000.40 : 16,346,810.40 = 6,851,048.80 : x
  2. Step 2: Convert to fraction form
    10,890,000.40/16,346,810.40 = 6,851,048.80/x
  3. Step 3: Cross multiply
    10,890,000.40x = 16,346,810.40 × 6,851,048.80
  4. Step 4: Simplify right side
    10,890,000.40x = 111,992,795,774,747.52
  5. Step 5: Solve for x
    x = 111,992,795,774,747.52/10,890,000.40
  6. Step 6: Final answer
    x = 10,284,002.91

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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.