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Finding the Fourth Proportional to 6,698,978.40, 10,045,357.20 and 2,910,511.20

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Solution

The fourth proportional to 6,698,978.40, 10,045,357.20 and 2,910,511.20 is: 4,364,415.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,698,978.40 : 10,045,357.20 = 2,910,511.20 : x
  2. Step 2: Convert to fraction form
    6,698,978.40/10,045,357.20 = 2,910,511.20/x
  3. Step 3: Cross multiply
    6,698,978.40x = 10,045,357.20 × 2,910,511.20
  4. Step 4: Simplify right side
    6,698,978.40x = 29,237,124,638,600.64
  5. Step 5: Solve for x
    x = 29,237,124,638,600.64/6,698,978.40
  6. Step 6: Final answer
    x = 4,364,415.42

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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.