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Finding the Fourth Proportional to 618,962.49, 854,320.16 and 377,378.26

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Solution

The fourth proportional to 618,962.49, 854,320.16 and 377,378.26 is: 520,874.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,962.49 : 854,320.16 = 377,378.26 : x
  2. Step 2: Convert to fraction form
    618,962.49/854,320.16 = 377,378.26/x
  3. Step 3: Cross multiply
    618,962.49x = 854,320.16 × 377,378.26
  4. Step 4: Simplify right side
    618,962.49x = 322,401,854,271.37
  5. Step 5: Solve for x
    x = 322,401,854,271.37/618,962.49
  6. Step 6: Final answer
    x = 520,874.62

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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.