Home / 1,438,588.09-2,157,881.52-427,705.66

Finding the Fourth Proportional to 1,438,588.09, 2,157,881.52 and 427,705.66

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Solution

The fourth proportional to 1,438,588.09, 2,157,881.52 and 427,705.66 is: 641,558.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,588.09 : 2,157,881.52 = 427,705.66 : x
  2. Step 2: Convert to fraction form
    1,438,588.09/2,157,881.52 = 427,705.66/x
  3. Step 3: Cross multiply
    1,438,588.09x = 2,157,881.52 × 427,705.66
  4. Step 4: Simplify right side
    1,438,588.09x = 922,938,139,713.40
  5. Step 5: Solve for x
    x = 922,938,139,713.40/1,438,588.09
  6. Step 6: Final answer
    x = 641,558.31

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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.