Home / 386,627.20-579,940.80-358,633.60

Finding the Fourth Proportional to 386,627.20, 579,940.80 and 358,633.60

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Solution

The fourth proportional to 386,627.20, 579,940.80 and 358,633.60 is: 537,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,627.20 : 579,940.80 = 358,633.60 : x
  2. Step 2: Convert to fraction form
    386,627.20/579,940.80 = 358,633.60/x
  3. Step 3: Cross multiply
    386,627.20x = 579,940.80 × 358,633.60
  4. Step 4: Simplify right side
    386,627.20x = 207,986,256,890.88
  5. Step 5: Solve for x
    x = 207,986,256,890.88/386,627.20
  6. Step 6: Final answer
    x = 537,950.40

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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.