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Finding the Fourth Proportional to 1,739,986.20, 2,607,905.70 and 729,106.20

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Solution

The fourth proportional to 1,739,986.20, 2,607,905.70 and 729,106.20 is: 1,092,790.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,739,986.20 : 2,607,905.70 = 729,106.20 : x
  2. Step 2: Convert to fraction form
    1,739,986.20/2,607,905.70 = 729,106.20/x
  3. Step 3: Cross multiply
    1,739,986.20x = 2,607,905.70 × 729,106.20
  4. Step 4: Simplify right side
    1,739,986.20x = 1,901,440,214,885.34
  5. Step 5: Solve for x
    x = 1,901,440,214,885.34/1,739,986.20
  6. Step 6: Final answer
    x = 1,092,790.40

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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.