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Finding the Fourth Proportional to 874,398.60, 1,212,172.92 and 826,503.48

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Solution

The fourth proportional to 874,398.60, 1,212,172.92 and 826,503.48 is: 1,145,776.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,398.60 : 1,212,172.92 = 826,503.48 : x
  2. Step 2: Convert to fraction form
    874,398.60/1,212,172.92 = 826,503.48/x
  3. Step 3: Cross multiply
    874,398.60x = 1,212,172.92 × 826,503.48
  4. Step 4: Simplify right side
    874,398.60x = 1,001,865,136,741.76
  5. Step 5: Solve for x
    x = 1,001,865,136,741.76/874,398.60
  6. Step 6: Final answer
    x = 1,145,776.24

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.