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Finding the Fourth Proportional to 933,648.80, 1,397,362.80 and 821,674.40

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Solution

The fourth proportional to 933,648.80, 1,397,362.80 and 821,674.40 is: 1,229,774.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    933,648.80 : 1,397,362.80 = 821,674.40 : x
  2. Step 2: Convert to fraction form
    933,648.80/1,397,362.80 = 821,674.40/x
  3. Step 3: Cross multiply
    933,648.80x = 1,397,362.80 × 821,674.40
  4. Step 4: Simplify right side
    933,648.80x = 1,148,177,240,272.32
  5. Step 5: Solve for x
    x = 1,148,177,240,272.32/933,648.80
  6. Step 6: Final answer
    x = 1,229,774.24

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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.