Home / 612,992.45-845,916.32-354,880.33

Finding the Fourth Proportional to 612,992.45, 845,916.32 and 354,880.33

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Solution

The fourth proportional to 612,992.45, 845,916.32 and 354,880.33 is: 489,727.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,992.45 : 845,916.32 = 354,880.33 : x
  2. Step 2: Convert to fraction form
    612,992.45/845,916.32 = 354,880.33/x
  3. Step 3: Cross multiply
    612,992.45x = 845,916.32 × 354,880.33
  4. Step 4: Simplify right side
    612,992.45x = 300,199,061,566.40
  5. Step 5: Solve for x
    x = 300,199,061,566.40/612,992.45
  6. Step 6: Final answer
    x = 489,727.17

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1.5x scale

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.