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Finding the Fourth Proportional to 873,871.64, 1,311,316.95 and 368,401.67

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Solution

The fourth proportional to 873,871.64, 1,311,316.95 and 368,401.67 is: 552,817.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,871.64 : 1,311,316.95 = 368,401.67 : x
  2. Step 2: Convert to fraction form
    873,871.64/1,311,316.95 = 368,401.67/x
  3. Step 3: Cross multiply
    873,871.64x = 1,311,316.95 × 368,401.67
  4. Step 4: Simplify right side
    873,871.64x = 483,091,354,279.31
  5. Step 5: Solve for x
    x = 483,091,354,279.31/873,871.64
  6. Step 6: Final answer
    x = 552,817.29

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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.