Home / 1,220,288.76-1,683,428.94-767,829.24

Finding the Fourth Proportional to 1,220,288.76, 1,683,428.94 and 767,829.24

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Solution

The fourth proportional to 1,220,288.76, 1,683,428.94 and 767,829.24 is: 1,059,245.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,288.76 : 1,683,428.94 = 767,829.24 : x
  2. Step 2: Convert to fraction form
    1,220,288.76/1,683,428.94 = 767,829.24/x
  3. Step 3: Cross multiply
    1,220,288.76x = 1,683,428.94 × 767,829.24
  4. Step 4: Simplify right side
    1,220,288.76x = 1,292,585,963,594.21
  5. Step 5: Solve for x
    x = 1,292,585,963,594.21/1,220,288.76
  6. Step 6: Final answer
    x = 1,059,245.98

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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.