Home / 912,979.83-1,368,579.75-380,653.09

Finding the Fourth Proportional to 912,979.83, 1,368,579.75 and 380,653.09

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Solution

The fourth proportional to 912,979.83, 1,368,579.75 and 380,653.09 is: 570,608.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,979.83 : 1,368,579.75 = 380,653.09 : x
  2. Step 2: Convert to fraction form
    912,979.83/1,368,579.75 = 380,653.09/x
  3. Step 3: Cross multiply
    912,979.83x = 1,368,579.75 × 380,653.09
  4. Step 4: Simplify right side
    912,979.83x = 520,954,115,739.46
  5. Step 5: Solve for x
    x = 520,954,115,739.46/912,979.83
  6. Step 6: Final answer
    x = 570,608.57

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1.5x scale

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.