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Finding the Fourth Proportional to 618,783.08, 853,960.10 and 346,851.03

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Solution

The fourth proportional to 618,783.08, 853,960.10 and 346,851.03 is: 478,676.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,783.08 : 853,960.10 = 346,851.03 : x
  2. Step 2: Convert to fraction form
    618,783.08/853,960.10 = 346,851.03/x
  3. Step 3: Cross multiply
    618,783.08x = 853,960.10 × 346,851.03
  4. Step 4: Simplify right side
    618,783.08x = 296,196,938,529.65
  5. Step 5: Solve for x
    x = 296,196,938,529.65/618,783.08
  6. Step 6: Final answer
    x = 478,676.54

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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.