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Finding the Fourth Proportional to 559,246.88, 771,496.84 and 378,022.07

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Solution

The fourth proportional to 559,246.88, 771,496.84 and 378,022.07 is: 521,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,246.88 : 771,496.84 = 378,022.07 : x
  2. Step 2: Convert to fraction form
    559,246.88/771,496.84 = 378,022.07/x
  3. Step 3: Cross multiply
    559,246.88x = 771,496.84 × 378,022.07
  4. Step 4: Simplify right side
    559,246.88x = 291,642,832,455.26
  5. Step 5: Solve for x
    x = 291,642,832,455.26/559,246.88
  6. Step 6: Final answer
    x = 521,492.10

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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.