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Finding the Fourth Proportional to 564,536.88, 779,036.40 and 309,892.32

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Solution

The fourth proportional to 564,536.88, 779,036.40 and 309,892.32 is: 427,637.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,536.88 : 779,036.40 = 309,892.32 : x
  2. Step 2: Convert to fraction form
    564,536.88/779,036.40 = 309,892.32/x
  3. Step 3: Cross multiply
    564,536.88x = 779,036.40 × 309,892.32
  4. Step 4: Simplify right side
    564,536.88x = 241,417,397,360.45
  5. Step 5: Solve for x
    x = 241,417,397,360.45/564,536.88
  6. Step 6: Final answer
    x = 427,637.96

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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.