Home / 1,221,220.40-1,685,365.80-677,528.96

Finding the Fourth Proportional to 1,221,220.40, 1,685,365.80 and 677,528.96

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Solution

The fourth proportional to 1,221,220.40, 1,685,365.80 and 677,528.96 is: 935,035.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,220.40 : 1,685,365.80 = 677,528.96 : x
  2. Step 2: Convert to fraction form
    1,221,220.40/1,685,365.80 = 677,528.96/x
  3. Step 3: Cross multiply
    1,221,220.40x = 1,685,365.80 × 677,528.96
  4. Step 4: Simplify right side
    1,221,220.40x = 1,141,884,137,693.57
  5. Step 5: Solve for x
    x = 1,141,884,137,693.57/1,221,220.40
  6. Step 6: Final answer
    x = 935,035.26

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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.