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Finding the Fourth Proportional to 618,723.84, 853,909.56 and 346,865.04

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Solution

The fourth proportional to 618,723.84, 853,909.56 and 346,865.04 is: 478,713.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,723.84 : 853,909.56 = 346,865.04 : x
  2. Step 2: Convert to fraction form
    618,723.84/853,909.56 = 346,865.04/x
  3. Step 3: Cross multiply
    618,723.84x = 853,909.56 × 346,865.04
  4. Step 4: Simplify right side
    618,723.84x = 296,191,373,685.78
  5. Step 5: Solve for x
    x = 296,191,373,685.78/618,723.84
  6. Step 6: Final answer
    x = 478,713.37

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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.