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Finding the Fourth Proportional to 876,870.70, 1,317,274.35 and 843,409.60

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Solution

The fourth proportional to 876,870.70, 1,317,274.35 and 843,409.60 is: 1,267,007.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,870.70 : 1,317,274.35 = 843,409.60 : x
  2. Step 2: Convert to fraction form
    876,870.70/1,317,274.35 = 843,409.60/x
  3. Step 3: Cross multiply
    876,870.70x = 1,317,274.35 × 843,409.60
  4. Step 4: Simplify right side
    876,870.70x = 1,111,001,832,623.76
  5. Step 5: Solve for x
    x = 1,111,001,832,623.76/876,870.70
  6. Step 6: Final answer
    x = 1,267,007.59

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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.