Home / 388,945.20-583,417.80-330,625.20

Finding the Fourth Proportional to 388,945.20, 583,417.80 and 330,625.20

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Solution

The fourth proportional to 388,945.20, 583,417.80 and 330,625.20 is: 495,937.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,945.20 : 583,417.80 = 330,625.20 : x
  2. Step 2: Convert to fraction form
    388,945.20/583,417.80 = 330,625.20/x
  3. Step 3: Cross multiply
    388,945.20x = 583,417.80 × 330,625.20
  4. Step 4: Simplify right side
    388,945.20x = 192,892,626,808.56
  5. Step 5: Solve for x
    x = 192,892,626,808.56/388,945.20
  6. Step 6: Final answer
    x = 495,937.80

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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.