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Finding the Fourth Proportional to 618,019.18, 853,362.48 and 496,771.90

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Solution

The fourth proportional to 618,019.18, 853,362.48 and 496,771.90 is: 685,943.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,019.18 : 853,362.48 = 496,771.90 : x
  2. Step 2: Convert to fraction form
    618,019.18/853,362.48 = 496,771.90/x
  3. Step 3: Cross multiply
    618,019.18x = 853,362.48 × 496,771.90
  4. Step 4: Simplify right side
    618,019.18x = 423,926,500,578.31
  5. Step 5: Solve for x
    x = 423,926,500,578.31/618,019.18
  6. Step 6: Final answer
    x = 685,943.92

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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.