Home / 399,124.20-598,686.30-328,265.40

Finding the Fourth Proportional to 399,124.20, 598,686.30 and 328,265.40

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Solution

The fourth proportional to 399,124.20, 598,686.30 and 328,265.40 is: 492,398.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,124.20 : 598,686.30 = 328,265.40 : x
  2. Step 2: Convert to fraction form
    399,124.20/598,686.30 = 328,265.40/x
  3. Step 3: Cross multiply
    399,124.20x = 598,686.30 × 328,265.40
  4. Step 4: Simplify right side
    399,124.20x = 196,527,997,744.02
  5. Step 5: Solve for x
    x = 196,527,997,744.02/399,124.20
  6. Step 6: Final answer
    x = 492,398.10

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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.