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Finding the Fourth Proportional to 559,702.58, 771,779.75 and 378,099.36

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Solution

The fourth proportional to 559,702.58, 771,779.75 and 378,099.36 is: 521,365.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,702.58 : 771,779.75 = 378,099.36 : x
  2. Step 2: Convert to fraction form
    559,702.58/771,779.75 = 378,099.36/x
  3. Step 3: Cross multiply
    559,702.58x = 771,779.75 × 378,099.36
  4. Step 4: Simplify right side
    559,702.58x = 291,809,427,645.46
  5. Step 5: Solve for x
    x = 291,809,427,645.46/559,702.58
  6. Step 6: Final answer
    x = 521,365.17

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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.