Home / 1,328,768.55-1,993,152.83-921,330.45

Finding the Fourth Proportional to 1,328,768.55, 1,993,152.83 and 921,330.45

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Solution

The fourth proportional to 1,328,768.55, 1,993,152.83 and 921,330.45 is: 1,381,995.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,768.55 : 1,993,152.83 = 921,330.45 : x
  2. Step 2: Convert to fraction form
    1,328,768.55/1,993,152.83 = 921,330.45/x
  3. Step 3: Cross multiply
    1,328,768.55x = 1,993,152.83 × 921,330.45
  4. Step 4: Simplify right side
    1,328,768.55x = 1,836,352,389,176.02
  5. Step 5: Solve for x
    x = 1,836,352,389,176.02/1,328,768.55
  6. Step 6: Final answer
    x = 1,381,995.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.