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Finding the Fourth Proportional to 877,557, 1,211,028.66 and 475,149

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Solution

The fourth proportional to 877,557, 1,211,028.66 and 475,149 is: 655,705.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,557 : 1,211,028.66 = 475,149 : x
  2. Step 2: Convert to fraction form
    877,557/1,211,028.66 = 475,149/x
  3. Step 3: Cross multiply
    877,557x = 1,211,028.66 × 475,149
  4. Step 4: Simplify right side
    877,557x = 575,419,056,770.34
  5. Step 5: Solve for x
    x = 575,419,056,770.34/877,557
  6. Step 6: Final answer
    x = 655,705.62

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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.