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Finding the Fourth Proportional to 618,366.69, 853,152.35 and 346,397.85

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Solution

The fourth proportional to 618,366.69, 853,152.35 and 346,397.85 is: 477,920.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,366.69 : 853,152.35 = 346,397.85 : x
  2. Step 2: Convert to fraction form
    618,366.69/853,152.35 = 346,397.85/x
  3. Step 3: Cross multiply
    618,366.69x = 853,152.35 × 346,397.85
  4. Step 4: Simplify right side
    618,366.69x = 295,530,138,030.46
  5. Step 5: Solve for x
    x = 295,530,138,030.46/618,366.69
  6. Step 6: Final answer
    x = 477,920.53

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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.