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Finding the Fourth Proportional to 1,433,351.62, 1,977,975.65 and 788,711.54

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Solution

The fourth proportional to 1,433,351.62, 1,977,975.65 and 788,711.54 is: 1,088,394.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,351.62 : 1,977,975.65 = 788,711.54 : x
  2. Step 2: Convert to fraction form
    1,433,351.62/1,977,975.65 = 788,711.54/x
  3. Step 3: Cross multiply
    1,433,351.62x = 1,977,975.65 × 788,711.54
  4. Step 4: Simplify right side
    1,433,351.62x = 1,560,052,220,994.00
  5. Step 5: Solve for x
    x = 1,560,052,220,994.00/1,433,351.62
  6. Step 6: Final answer
    x = 1,088,394.64

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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.