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Finding the Fourth Proportional to 1,432,933.45, 1,977,448.07 and 788,339.80

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Solution

The fourth proportional to 1,432,933.45, 1,977,448.07 and 788,339.80 is: 1,087,908.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,933.45 : 1,977,448.07 = 788,339.80 : x
  2. Step 2: Convert to fraction form
    1,432,933.45/1,977,448.07 = 788,339.80/x
  3. Step 3: Cross multiply
    1,432,933.45x = 1,977,448.07 × 788,339.80
  4. Step 4: Simplify right side
    1,432,933.45x = 1,558,901,016,014.19
  5. Step 5: Solve for x
    x = 1,558,901,016,014.19/1,432,933.45
  6. Step 6: Final answer
    x = 1,087,908.87

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.