Home / 1,440,886.78-1,988,426.93-787,523.28

Finding the Fourth Proportional to 1,440,886.78, 1,988,426.93 and 787,523.28

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Solution

The fourth proportional to 1,440,886.78, 1,988,426.93 and 787,523.28 is: 1,086,783.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,886.78 : 1,988,426.93 = 787,523.28 : x
  2. Step 2: Convert to fraction form
    1,440,886.78/1,988,426.93 = 787,523.28/x
  3. Step 3: Cross multiply
    1,440,886.78x = 1,988,426.93 × 787,523.28
  4. Step 4: Simplify right side
    1,440,886.78x = 1,565,932,497,953.93
  5. Step 5: Solve for x
    x = 1,565,932,497,953.93/1,440,886.78
  6. Step 6: Final answer
    x = 1,086,783.86

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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.