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Finding the Fourth Proportional to 705,776.72, 1,058,070 and 306,116.60

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Solution

The fourth proportional to 705,776.72, 1,058,070 and 306,116.60 is: 458,916.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,776.72 : 1,058,070 = 306,116.60 : x
  2. Step 2: Convert to fraction form
    705,776.72/1,058,070 = 306,116.60/x
  3. Step 3: Cross multiply
    705,776.72x = 1,058,070 × 306,116.60
  4. Step 4: Simplify right side
    705,776.72x = 323,892,790,962
  5. Step 5: Solve for x
    x = 323,892,790,962/705,776.72
  6. Step 6: Final answer
    x = 458,916.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.