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Finding the Fourth Proportional to 1,223,059.80, 1,834,589.70 and 849,811.80

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Solution

The fourth proportional to 1,223,059.80, 1,834,589.70 and 849,811.80 is: 1,274,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,059.80 : 1,834,589.70 = 849,811.80 : x
  2. Step 2: Convert to fraction form
    1,223,059.80/1,834,589.70 = 849,811.80/x
  3. Step 3: Cross multiply
    1,223,059.80x = 1,834,589.70 × 849,811.80
  4. Step 4: Simplify right side
    1,223,059.80x = 1,559,055,975,218.46
  5. Step 5: Solve for x
    x = 1,559,055,975,218.46/1,223,059.80
  6. Step 6: Final answer
    x = 1,274,717.70

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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.