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Finding the Fourth Proportional to 618,737.28, 853,893.84 and 346,894.32

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Solution

The fourth proportional to 618,737.28, 853,893.84 and 346,894.32 is: 478,734.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,737.28 : 853,893.84 = 346,894.32 : x
  2. Step 2: Convert to fraction form
    618,737.28/853,893.84 = 346,894.32/x
  3. Step 3: Cross multiply
    618,737.28x = 853,893.84 × 346,894.32
  4. Step 4: Simplify right side
    618,737.28x = 296,210,922,978.99
  5. Step 5: Solve for x
    x = 296,210,922,978.99/618,737.28
  6. Step 6: Final answer
    x = 478,734.57

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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.