Home / 388,979.20-583,468.80-330,659.20

Finding the Fourth Proportional to 388,979.20, 583,468.80 and 330,659.20

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Solution

The fourth proportional to 388,979.20, 583,468.80 and 330,659.20 is: 495,988.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,979.20 : 583,468.80 = 330,659.20 : x
  2. Step 2: Convert to fraction form
    388,979.20/583,468.80 = 330,659.20/x
  3. Step 3: Cross multiply
    388,979.20x = 583,468.80 × 330,659.20
  4. Step 4: Simplify right side
    388,979.20x = 192,929,326,632.96
  5. Step 5: Solve for x
    x = 192,929,326,632.96/388,979.20
  6. Step 6: Final answer
    x = 495,988.80

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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.