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Finding the Fourth Proportional to 877,635, 1,316,452.68 and 212,787

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Solution

The fourth proportional to 877,635, 1,316,452.68 and 212,787 is: 319,180.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,635 : 1,316,452.68 = 212,787 : x
  2. Step 2: Convert to fraction form
    877,635/1,316,452.68 = 212,787/x
  3. Step 3: Cross multiply
    877,635x = 1,316,452.68 × 212,787
  4. Step 4: Simplify right side
    877,635x = 280,124,016,419.16
  5. Step 5: Solve for x
    x = 280,124,016,419.16/877,635
  6. Step 6: Final answer
    x = 319,180.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.