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Finding the Fourth Proportional to 873,871.20, 1,311,316.20 and 368,401.20

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Solution

The fourth proportional to 873,871.20, 1,311,316.20 and 368,401.20 is: 552,816.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,871.20 : 1,311,316.20 = 368,401.20 : x
  2. Step 2: Convert to fraction form
    873,871.20/1,311,316.20 = 368,401.20/x
  3. Step 3: Cross multiply
    873,871.20x = 1,311,316.20 × 368,401.20
  4. Step 4: Simplify right side
    873,871.20x = 483,090,461,659.44
  5. Step 5: Solve for x
    x = 483,090,461,659.44/873,871.20
  6. Step 6: Final answer
    x = 552,816.55

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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.