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Finding the Fourth Proportional to 2,678,944.74, 4,018,448.43 and 785,724.18

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Solution

The fourth proportional to 2,678,944.74, 4,018,448.43 and 785,724.18 is: 1,178,595.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678,944.74 : 4,018,448.43 = 785,724.18 : x
  2. Step 2: Convert to fraction form
    2,678,944.74/4,018,448.43 = 785,724.18/x
  3. Step 3: Cross multiply
    2,678,944.74x = 4,018,448.43 × 785,724.18
  4. Step 4: Simplify right side
    2,678,944.74x = 3,157,392,097,534.04
  5. Step 5: Solve for x
    x = 3,157,392,097,534.04/2,678,944.74
  6. Step 6: Final answer
    x = 1,178,595.46

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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.