Home / 388,949.20-583,423.80-330,629.20

Finding the Fourth Proportional to 388,949.20, 583,423.80 and 330,629.20

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Solution

The fourth proportional to 388,949.20, 583,423.80 and 330,629.20 is: 495,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,949.20 : 583,423.80 = 330,629.20 : x
  2. Step 2: Convert to fraction form
    388,949.20/583,423.80 = 330,629.20/x
  3. Step 3: Cross multiply
    388,949.20x = 583,423.80 × 330,629.20
  4. Step 4: Simplify right side
    388,949.20x = 192,896,944,254.96
  5. Step 5: Solve for x
    x = 192,896,944,254.96/388,949.20
  6. Step 6: Final answer
    x = 495,943.80

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1.5x scale

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.