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Finding the Fourth Proportional to 660,058.40, 989,857.20 and 344,410.40

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Solution

The fourth proportional to 660,058.40, 989,857.20 and 344,410.40 is: 516,495.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,058.40 : 989,857.20 = 344,410.40 : x
  2. Step 2: Convert to fraction form
    660,058.40/989,857.20 = 344,410.40/x
  3. Step 3: Cross multiply
    660,058.40x = 989,857.20 × 344,410.40
  4. Step 4: Simplify right side
    660,058.40x = 340,917,114,194.88
  5. Step 5: Solve for x
    x = 340,917,114,194.88/660,058.40
  6. Step 6: Final answer
    x = 516,495.38

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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.