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Finding the Fourth Proportional to 1,295,503.88, 1,787,795.15 and 722,531.76

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Solution

The fourth proportional to 1,295,503.88, 1,787,795.15 and 722,531.76 is: 997,093.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,503.88 : 1,787,795.15 = 722,531.76 : x
  2. Step 2: Convert to fraction form
    1,295,503.88/1,787,795.15 = 722,531.76/x
  3. Step 3: Cross multiply
    1,295,503.88x = 1,787,795.15 × 722,531.76
  4. Step 4: Simplify right side
    1,295,503.88x = 1,291,738,776,248.96
  5. Step 5: Solve for x
    x = 1,291,738,776,248.96/1,295,503.88
  6. Step 6: Final answer
    x = 997,093.71

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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.