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Finding the Fourth Proportional to 1,577,321.80, 2,365,982.70 and 866,984.20

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Solution

The fourth proportional to 1,577,321.80, 2,365,982.70 and 866,984.20 is: 1,300,476.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577,321.80 : 2,365,982.70 = 866,984.20 : x
  2. Step 2: Convert to fraction form
    1,577,321.80/2,365,982.70 = 866,984.20/x
  3. Step 3: Cross multiply
    1,577,321.80x = 2,365,982.70 × 866,984.20
  4. Step 4: Simplify right side
    1,577,321.80x = 2,051,269,618,373.34
  5. Step 5: Solve for x
    x = 2,051,269,618,373.34/1,577,321.80
  6. Step 6: Final answer
    x = 1,300,476.30

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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.