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Finding the Fourth Proportional to 551,543.00, 761,046.43 and 309,779.26

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Solution

The fourth proportional to 551,543.00, 761,046.43 and 309,779.26 is: 427,448.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,543.00 : 761,046.43 = 309,779.26 : x
  2. Step 2: Convert to fraction form
    551,543.00/761,046.43 = 309,779.26/x
  3. Step 3: Cross multiply
    551,543.00x = 761,046.43 × 309,779.26
  4. Step 4: Simplify right side
    551,543.00x = 235,756,396,105.81
  5. Step 5: Solve for x
    x = 235,756,396,105.81/551,543.00
  6. Step 6: Final answer
    x = 427,448.81

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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.