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Finding the Fourth Proportional to 679,062.89, 936,464.43 and 446,078.49

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Solution

The fourth proportional to 679,062.89, 936,464.43 and 446,078.49 is: 615,166.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,062.89 : 936,464.43 = 446,078.49 : x
  2. Step 2: Convert to fraction form
    679,062.89/936,464.43 = 446,078.49/x
  3. Step 3: Cross multiply
    679,062.89x = 936,464.43 × 446,078.49
  4. Step 4: Simplify right side
    679,062.89x = 417,736,638,873.11
  5. Step 5: Solve for x
    x = 417,736,638,873.11/679,062.89
  6. Step 6: Final answer
    x = 615,166.35

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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.