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Finding the Fourth Proportional to 618,775.74, 853,962.75 and 346,839.30

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Solution

The fourth proportional to 618,775.74, 853,962.75 and 346,839.30 is: 478,667.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,775.74 : 853,962.75 = 346,839.30 : x
  2. Step 2: Convert to fraction form
    618,775.74/853,962.75 = 346,839.30/x
  3. Step 3: Cross multiply
    618,775.74x = 853,962.75 × 346,839.30
  4. Step 4: Simplify right side
    618,775.74x = 296,187,842,436.08
  5. Step 5: Solve for x
    x = 296,187,842,436.08/618,775.74
  6. Step 6: Final answer
    x = 478,667.51

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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.