Home / 382,638.77-528,769.79-286,979.39

Finding the Fourth Proportional to 382,638.77, 528,769.79 and 286,979.39

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Solution

The fourth proportional to 382,638.77, 528,769.79 and 286,979.39 is: 396,577.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,638.77 : 528,769.79 = 286,979.39 : x
  2. Step 2: Convert to fraction form
    382,638.77/528,769.79 = 286,979.39/x
  3. Step 3: Cross multiply
    382,638.77x = 528,769.79 × 286,979.39
  4. Step 4: Simplify right side
    382,638.77x = 151,746,030,764.94
  5. Step 5: Solve for x
    x = 151,746,030,764.94/382,638.77
  6. Step 6: Final answer
    x = 396,577.77

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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.