Home / 1,428,089.40-1,970,783.46-783,497.88

Finding the Fourth Proportional to 1,428,089.40, 1,970,783.46 and 783,497.88

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Solution

The fourth proportional to 1,428,089.40, 1,970,783.46 and 783,497.88 is: 1,081,238.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,089.40 : 1,970,783.46 = 783,497.88 : x
  2. Step 2: Convert to fraction form
    1,428,089.40/1,970,783.46 = 783,497.88/x
  3. Step 3: Cross multiply
    1,428,089.40x = 1,970,783.46 × 783,497.88
  4. Step 4: Simplify right side
    1,428,089.40x = 1,544,104,662,849.06
  5. Step 5: Solve for x
    x = 1,544,104,662,849.06/1,428,089.40
  6. Step 6: Final answer
    x = 1,081,238.10

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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.