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Finding the Fourth Proportional to 616,329.83, 850,619.61 and 354,679.74

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Solution

The fourth proportional to 616,329.83, 850,619.61 and 354,679.74 is: 489,506.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,329.83 : 850,619.61 = 354,679.74 : x
  2. Step 2: Convert to fraction form
    616,329.83/850,619.61 = 354,679.74/x
  3. Step 3: Cross multiply
    616,329.83x = 850,619.61 × 354,679.74
  4. Step 4: Simplify right side
    616,329.83x = 301,697,542,113.70
  5. Step 5: Solve for x
    x = 301,697,542,113.70/616,329.83
  6. Step 6: Final answer
    x = 489,506.64

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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.