Home / 1,185,959.09-1,636,603.69-642,090.46

Finding the Fourth Proportional to 1,185,959.09, 1,636,603.69 and 642,090.46

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Solution

The fourth proportional to 1,185,959.09, 1,636,603.69 and 642,090.46 is: 886,074.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,959.09 : 1,636,603.69 = 642,090.46 : x
  2. Step 2: Convert to fraction form
    1,185,959.09/1,636,603.69 = 642,090.46/x
  3. Step 3: Cross multiply
    1,185,959.09x = 1,636,603.69 × 642,090.46
  4. Step 4: Simplify right side
    1,185,959.09x = 1,050,847,615,709.27
  5. Step 5: Solve for x
    x = 1,050,847,615,709.27/1,185,959.09
  6. Step 6: Final answer
    x = 886,074.09

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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.