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Finding the Fourth Proportional to 802,702.72, 1,107,779.56 and 445,006.72

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Solution

The fourth proportional to 802,702.72, 1,107,779.56 and 445,006.72 is: 614,136.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,702.72 : 1,107,779.56 = 445,006.72 : x
  2. Step 2: Convert to fraction form
    802,702.72/1,107,779.56 = 445,006.72/x
  3. Step 3: Cross multiply
    802,702.72x = 1,107,779.56 × 445,006.72
  4. Step 4: Simplify right side
    802,702.72x = 492,969,348,478.64
  5. Step 5: Solve for x
    x = 492,969,348,478.64/802,702.72
  6. Step 6: Final answer
    x = 614,136.89

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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.