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Finding the Fourth Proportional to 618,925.15, 854,116 and 346,993.12

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Solution

The fourth proportional to 618,925.15, 854,116 and 346,993.12 is: 478,850.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,925.15 : 854,116 = 346,993.12 : x
  2. Step 2: Convert to fraction form
    618,925.15/854,116 = 346,993.12/x
  3. Step 3: Cross multiply
    618,925.15x = 854,116 × 346,993.12
  4. Step 4: Simplify right side
    618,925.15x = 296,372,375,681.92
  5. Step 5: Solve for x
    x = 296,372,375,681.92/618,925.15
  6. Step 6: Final answer
    x = 478,850.11

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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.