Home / 1,326,678.64-1,990,039.56-380,045.68

Finding the Fourth Proportional to 1,326,678.64, 1,990,039.56 and 380,045.68

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Solution

The fourth proportional to 1,326,678.64, 1,990,039.56 and 380,045.68 is: 570,074.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,678.64 : 1,990,039.56 = 380,045.68 : x
  2. Step 2: Convert to fraction form
    1,326,678.64/1,990,039.56 = 380,045.68/x
  3. Step 3: Cross multiply
    1,326,678.64x = 1,990,039.56 × 380,045.68
  4. Step 4: Simplify right side
    1,326,678.64x = 756,305,937,807.10
  5. Step 5: Solve for x
    x = 756,305,937,807.10/1,326,678.64
  6. Step 6: Final answer
    x = 570,074.71

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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.