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Finding the Fourth Proportional to 1,351,807.74, 1,865,367.09 and 807,835.23

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Solution

The fourth proportional to 1,351,807.74, 1,865,367.09 and 807,835.23 is: 1,114,736.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351,807.74 : 1,865,367.09 = 807,835.23 : x
  2. Step 2: Convert to fraction form
    1,351,807.74/1,865,367.09 = 807,835.23/x
  3. Step 3: Cross multiply
    1,351,807.74x = 1,865,367.09 × 807,835.23
  4. Step 4: Simplify right side
    1,351,807.74x = 1,506,909,252,184.58
  5. Step 5: Solve for x
    x = 1,506,909,252,184.58/1,351,807.74
  6. Step 6: Final answer
    x = 1,114,736.37

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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.