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Finding the Fourth Proportional to 593,411.80, 818,904.92 and 321,485

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Solution

The fourth proportional to 593,411.80, 818,904.92 and 321,485 is: 443,647.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,411.80 : 818,904.92 = 321,485 : x
  2. Step 2: Convert to fraction form
    593,411.80/818,904.92 = 321,485/x
  3. Step 3: Cross multiply
    593,411.80x = 818,904.92 × 321,485
  4. Step 4: Simplify right side
    593,411.80x = 263,265,648,206.20
  5. Step 5: Solve for x
    x = 263,265,648,206.20/593,411.80
  6. Step 6: Final answer
    x = 443,647.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.