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Finding the Fourth Proportional to 507,579.20, 700,459.19 and 303,638.72

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Solution

The fourth proportional to 507,579.20, 700,459.19 and 303,638.72 is: 419,021.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,579.20 : 700,459.19 = 303,638.72 : x
  2. Step 2: Convert to fraction form
    507,579.20/700,459.19 = 303,638.72/x
  3. Step 3: Cross multiply
    507,579.20x = 700,459.19 × 303,638.72
  4. Step 4: Simplify right side
    507,579.20x = 212,686,526,843.35
  5. Step 5: Solve for x
    x = 212,686,526,843.35/507,579.20
  6. Step 6: Final answer
    x = 419,021.36

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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.