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Finding the Fourth Proportional to 618,579, 853,640.64 and 360,609.12

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Solution

The fourth proportional to 618,579, 853,640.64 and 360,609.12 is: 497,641.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,579 : 853,640.64 = 360,609.12 : x
  2. Step 2: Convert to fraction form
    618,579/853,640.64 = 360,609.12/x
  3. Step 3: Cross multiply
    618,579x = 853,640.64 × 360,609.12
  4. Step 4: Simplify right side
    618,579x = 307,830,599,986.64
  5. Step 5: Solve for x
    x = 307,830,599,986.64/618,579
  6. Step 6: Final answer
    x = 497,641.53

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1.5x scale

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.