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Finding the Fourth Proportional to 721,802.89, 996,111.50 and 415,855.26

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Solution

The fourth proportional to 721,802.89, 996,111.50 and 415,855.26 is: 573,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,802.89 : 996,111.50 = 415,855.26 : x
  2. Step 2: Convert to fraction form
    721,802.89/996,111.50 = 415,855.26/x
  3. Step 3: Cross multiply
    721,802.89x = 996,111.50 × 415,855.26
  4. Step 4: Simplify right side
    721,802.89x = 414,238,204,742.21
  5. Step 5: Solve for x
    x = 414,238,204,742.21/721,802.89
  6. Step 6: Final answer
    x = 573,893.80

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1.5x scale

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.