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Finding the Fourth Proportional to 1,223,138.30, 1,834,707.45 and 849,890.30

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Solution

The fourth proportional to 1,223,138.30, 1,834,707.45 and 849,890.30 is: 1,274,835.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,138.30 : 1,834,707.45 = 849,890.30 : x
  2. Step 2: Convert to fraction form
    1,223,138.30/1,834,707.45 = 849,890.30/x
  3. Step 3: Cross multiply
    1,223,138.30x = 1,834,707.45 × 849,890.30
  4. Step 4: Simplify right side
    1,223,138.30x = 1,559,300,065,092.74
  5. Step 5: Solve for x
    x = 1,559,300,065,092.74/1,223,138.30
  6. Step 6: Final answer
    x = 1,274,835.45

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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.