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Finding the Fourth Proportional to 616,969.90, 851,461.86 and 345,063.10

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Solution

The fourth proportional to 616,969.90, 851,461.86 and 345,063.10 is: 476,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,969.90 : 851,461.86 = 345,063.10 : x
  2. Step 2: Convert to fraction form
    616,969.90/851,461.86 = 345,063.10/x
  3. Step 3: Cross multiply
    616,969.90x = 851,461.86 × 345,063.10
  4. Step 4: Simplify right side
    616,969.90x = 293,808,068,943.37
  5. Step 5: Solve for x
    x = 293,808,068,943.37/616,969.90
  6. Step 6: Final answer
    x = 476,211.35

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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.