Home / 382,639.71-528,771.08-286,980.33

Finding the Fourth Proportional to 382,639.71, 528,771.08 and 286,980.33

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Solution

The fourth proportional to 382,639.71, 528,771.08 and 286,980.33 is: 396,579.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,639.71 : 528,771.08 = 286,980.33 : x
  2. Step 2: Convert to fraction form
    382,639.71/528,771.08 = 286,980.33/x
  3. Step 3: Cross multiply
    382,639.71x = 528,771.08 × 286,980.33
  4. Step 4: Simplify right side
    382,639.71x = 151,746,897,597.96
  5. Step 5: Solve for x
    x = 151,746,897,597.96/382,639.71
  6. Step 6: Final answer
    x = 396,579.06

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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.