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Finding the Fourth Proportional to 1,248,222.80, 1,869,709.80 and 1,038,270.80

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Solution

The fourth proportional to 1,248,222.80, 1,869,709.80 and 1,038,270.80 is: 1,555,223.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,222.80 : 1,869,709.80 = 1,038,270.80 : x
  2. Step 2: Convert to fraction form
    1,248,222.80/1,869,709.80 = 1,038,270.80/x
  3. Step 3: Cross multiply
    1,248,222.80x = 1,869,709.80 × 1,038,270.80
  4. Step 4: Simplify right side
    1,248,222.80x = 1,941,265,089,813.84
  5. Step 5: Solve for x
    x = 1,941,265,089,813.84/1,248,222.80
  6. Step 6: Final answer
    x = 1,555,223.23

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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.