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Finding the Fourth Proportional to 577,836.40, 867,013.80 and 262,130.80

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Solution

The fourth proportional to 577,836.40, 867,013.80 and 262,130.80 is: 393,313.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,836.40 : 867,013.80 = 262,130.80 : x
  2. Step 2: Convert to fraction form
    577,836.40/867,013.80 = 262,130.80/x
  3. Step 3: Cross multiply
    577,836.40x = 867,013.80 × 262,130.80
  4. Step 4: Simplify right side
    577,836.40x = 227,271,021,005.04
  5. Step 5: Solve for x
    x = 227,271,021,005.04/577,836.40
  6. Step 6: Final answer
    x = 393,313.78

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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.