Home / 642,083.29-886,064.07-355,597.23

Finding the Fourth Proportional to 642,083.29, 886,064.07 and 355,597.23

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Solution

The fourth proportional to 642,083.29, 886,064.07 and 355,597.23 is: 490,718.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,083.29 : 886,064.07 = 355,597.23 : x
  2. Step 2: Convert to fraction form
    642,083.29/886,064.07 = 355,597.23/x
  3. Step 3: Cross multiply
    642,083.29x = 886,064.07 × 355,597.23
  4. Step 4: Simplify right side
    642,083.29x = 315,081,928,894.53
  5. Step 5: Solve for x
    x = 315,081,928,894.53/642,083.29
  6. Step 6: Final answer
    x = 490,718.16

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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.