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Finding the Fourth Proportional to 6,571,808.40, 9,856,965.12 and 1,779,871.20

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Solution

The fourth proportional to 6,571,808.40, 9,856,965.12 and 1,779,871.20 is: 2,669,604.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,571,808.40 : 9,856,965.12 = 1,779,871.20 : x
  2. Step 2: Convert to fraction form
    6,571,808.40/9,856,965.12 = 1,779,871.20/x
  3. Step 3: Cross multiply
    6,571,808.40x = 9,856,965.12 × 1,779,871.20
  4. Step 4: Simplify right side
    6,571,808.40x = 17,544,128,336,492.54
  5. Step 5: Solve for x
    x = 17,544,128,336,492.54/6,571,808.40
  6. Step 6: Final answer
    x = 2,669,604.36

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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.