Home / 386,577.05-579,883.83-318,983.72

Finding the Fourth Proportional to 386,577.05, 579,883.83 and 318,983.72

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Solution

The fourth proportional to 386,577.05, 579,883.83 and 318,983.72 is: 478,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,577.05 : 579,883.83 = 318,983.72 : x
  2. Step 2: Convert to fraction form
    386,577.05/579,883.83 = 318,983.72/x
  3. Step 3: Cross multiply
    386,577.05x = 579,883.83 × 318,983.72
  4. Step 4: Simplify right side
    386,577.05x = 184,973,501,261.25
  5. Step 5: Solve for x
    x = 184,973,501,261.25/386,577.05
  6. Step 6: Final answer
    x = 478,490.64

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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.