Home / 1,287,968.51-1,932,005.32-328,448.99

Finding the Fourth Proportional to 1,287,968.51, 1,932,005.32 and 328,448.99

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Solution

The fourth proportional to 1,287,968.51, 1,932,005.32 and 328,448.99 is: 492,686.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,968.51 : 1,932,005.32 = 328,448.99 : x
  2. Step 2: Convert to fraction form
    1,287,968.51/1,932,005.32 = 328,448.99/x
  3. Step 3: Cross multiply
    1,287,968.51x = 1,932,005.32 × 328,448.99
  4. Step 4: Simplify right side
    1,287,968.51x = 634,565,200,037.52
  5. Step 5: Solve for x
    x = 634,565,200,037.52/1,287,968.51
  6. Step 6: Final answer
    x = 492,686.89

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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.