Home / 2,129,645.90-2,938,564.71-1,258,359.45

Finding the Fourth Proportional to 2,129,645.90, 2,938,564.71 and 1,258,359.45

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Solution

The fourth proportional to 2,129,645.90, 2,938,564.71 and 1,258,359.45 is: 1,736,331.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,645.90 : 2,938,564.71 = 1,258,359.45 : x
  2. Step 2: Convert to fraction form
    2,129,645.90/2,938,564.71 = 1,258,359.45/x
  3. Step 3: Cross multiply
    2,129,645.90x = 2,938,564.71 × 1,258,359.45
  4. Step 4: Simplify right side
    2,129,645.90x = 3,697,770,661,245.39
  5. Step 5: Solve for x
    x = 3,697,770,661,245.39/2,129,645.90
  6. Step 6: Final answer
    x = 1,736,331.22

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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.