Home / 641,715.40-885,289.26-386,925.04

Finding the Fourth Proportional to 641,715.40, 885,289.26 and 386,925.04

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Solution

The fourth proportional to 641,715.40, 885,289.26 and 386,925.04 is: 533,788.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,715.40 : 885,289.26 = 386,925.04 : x
  2. Step 2: Convert to fraction form
    641,715.40/885,289.26 = 386,925.04/x
  3. Step 3: Cross multiply
    641,715.40x = 885,289.26 × 386,925.04
  4. Step 4: Simplify right side
    641,715.40x = 342,540,582,337.07
  5. Step 5: Solve for x
    x = 342,540,582,337.07/641,715.40
  6. Step 6: Final answer
    x = 533,788.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.