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Finding the Fourth Proportional to 613,105.20, 845,951.04 and 358,339.68

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Solution

The fourth proportional to 613,105.20, 845,951.04 and 358,339.68 is: 494,430.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,105.20 : 845,951.04 = 358,339.68 : x
  2. Step 2: Convert to fraction form
    613,105.20/845,951.04 = 358,339.68/x
  3. Step 3: Cross multiply
    613,105.20x = 845,951.04 × 358,339.68
  4. Step 4: Simplify right side
    613,105.20x = 303,137,824,969.27
  5. Step 5: Solve for x
    x = 303,137,824,969.27/613,105.20
  6. Step 6: Final answer
    x = 494,430.36

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1.5x scale

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.