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Finding the Fourth Proportional to 507,142.25, 760,428.79 and 347,398.73

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Solution

The fourth proportional to 507,142.25, 760,428.79 and 347,398.73 is: 520,903.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,142.25 : 760,428.79 = 347,398.73 : x
  2. Step 2: Convert to fraction form
    507,142.25/760,428.79 = 347,398.73/x
  3. Step 3: Cross multiply
    507,142.25x = 760,428.79 × 347,398.73
  4. Step 4: Simplify right side
    507,142.25x = 264,171,995,901.44
  5. Step 5: Solve for x
    x = 264,171,995,901.44/507,142.25
  6. Step 6: Final answer
    x = 520,903.15

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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.