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Finding the Fourth Proportional to 618,804.90, 853,959.51 and 377,097.66

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Solution

The fourth proportional to 618,804.90, 853,959.51 and 377,097.66 is: 520,400.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,804.90 : 853,959.51 = 377,097.66 : x
  2. Step 2: Convert to fraction form
    618,804.90/853,959.51 = 377,097.66/x
  3. Step 3: Cross multiply
    618,804.90x = 853,959.51 × 377,097.66
  4. Step 4: Simplify right side
    618,804.90x = 322,026,132,955.75
  5. Step 5: Solve for x
    x = 322,026,132,955.75/618,804.90
  6. Step 6: Final answer
    x = 520,400.10

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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.