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Finding the Fourth Proportional to 618,801.49, 853,998.29 and 346,865.05

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Solution

The fourth proportional to 618,801.49, 853,998.29 and 346,865.05 is: 478,703.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,801.49 : 853,998.29 = 346,865.05 : x
  2. Step 2: Convert to fraction form
    618,801.49/853,998.29 = 346,865.05/x
  3. Step 3: Cross multiply
    618,801.49x = 853,998.29 × 346,865.05
  4. Step 4: Simplify right side
    618,801.49x = 296,222,159,560.77
  5. Step 5: Solve for x
    x = 296,222,159,560.77/618,801.49
  6. Step 6: Final answer
    x = 478,703.05

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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.