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Finding the Fourth Proportional to 1,375,848.60, 1,898,677.03 and 763,999.49

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Solution

The fourth proportional to 1,375,848.60, 1,898,677.03 and 763,999.49 is: 1,054,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,848.60 : 1,898,677.03 = 763,999.49 : x
  2. Step 2: Convert to fraction form
    1,375,848.60/1,898,677.03 = 763,999.49/x
  3. Step 3: Cross multiply
    1,375,848.60x = 1,898,677.03 × 763,999.49
  4. Step 4: Simplify right side
    1,375,848.60x = 1,450,588,274,056.33
  5. Step 5: Solve for x
    x = 1,450,588,274,056.33/1,375,848.60
  6. Step 6: Final answer
    x = 1,054,322.60

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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.