Home / 386,629.20-579,943.80-358,635.60

Finding the Fourth Proportional to 386,629.20, 579,943.80 and 358,635.60

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Solution

The fourth proportional to 386,629.20, 579,943.80 and 358,635.60 is: 537,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,629.20 : 579,943.80 = 358,635.60 : x
  2. Step 2: Convert to fraction form
    386,629.20/579,943.80 = 358,635.60/x
  3. Step 3: Cross multiply
    386,629.20x = 579,943.80 × 358,635.60
  4. Step 4: Simplify right side
    386,629.20x = 207,988,492,679.28
  5. Step 5: Solve for x
    x = 207,988,492,679.28/386,629.20
  6. Step 6: Final answer
    x = 537,953.40

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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.