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Finding the Fourth Proportional to 1,295,986.95, 1,788,562.35 and 715,323.87

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Solution

The fourth proportional to 1,295,986.95, 1,788,562.35 and 715,323.87 is: 987,202.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,986.95 : 1,788,562.35 = 715,323.87 : x
  2. Step 2: Convert to fraction form
    1,295,986.95/1,788,562.35 = 715,323.87/x
  3. Step 3: Cross multiply
    1,295,986.95x = 1,788,562.35 × 715,323.87
  4. Step 4: Simplify right side
    1,295,986.95x = 1,279,401,341,938.29
  5. Step 5: Solve for x
    x = 1,279,401,341,938.29/1,295,986.95
  6. Step 6: Final answer
    x = 987,202.33

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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.