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Finding the Fourth Proportional to 616,917, 851,339.55 and 344,981.76

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Solution

The fourth proportional to 616,917, 851,339.55 and 344,981.76 is: 476,071.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,917 : 851,339.55 = 344,981.76 : x
  2. Step 2: Convert to fraction form
    616,917/851,339.55 = 344,981.76/x
  3. Step 3: Cross multiply
    616,917x = 851,339.55 × 344,981.76
  4. Step 4: Simplify right side
    616,917x = 293,696,616,316.61
  5. Step 5: Solve for x
    x = 293,696,616,316.61/616,917
  6. Step 6: Final answer
    x = 476,071.52

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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.