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Finding the Fourth Proportional to 626,647.78, 940,327.16 and 338,455.85

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Solution

The fourth proportional to 626,647.78, 940,327.16 and 338,455.85 is: 507,875.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,647.78 : 940,327.16 = 338,455.85 : x
  2. Step 2: Convert to fraction form
    626,647.78/940,327.16 = 338,455.85/x
  3. Step 3: Cross multiply
    626,647.78x = 940,327.16 × 338,455.85
  4. Step 4: Simplify right side
    626,647.78x = 318,259,228,215.89
  5. Step 5: Solve for x
    x = 318,259,228,215.89/626,647.78
  6. Step 6: Final answer
    x = 507,875.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.