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Finding the Fourth Proportional to 1,408,406.03, 1,943,704.67 and 788,273.22

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Solution

The fourth proportional to 1,408,406.03, 1,943,704.67 and 788,273.22 is: 1,087,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408,406.03 : 1,943,704.67 = 788,273.22 : x
  2. Step 2: Convert to fraction form
    1,408,406.03/1,943,704.67 = 788,273.22/x
  3. Step 3: Cross multiply
    1,408,406.03x = 1,943,704.67 × 788,273.22
  4. Step 4: Simplify right side
    1,408,406.03x = 1,532,170,335,008.57
  5. Step 5: Solve for x
    x = 1,532,170,335,008.57/1,408,406.03
  6. Step 6: Final answer
    x = 1,087,875.45

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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.