Home / 1,276,329.35-1,761,421.64-779,825.84

Finding the Fourth Proportional to 1,276,329.35, 1,761,421.64 and 779,825.84

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Solution

The fourth proportional to 1,276,329.35, 1,761,421.64 and 779,825.84 is: 1,076,212.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,329.35 : 1,761,421.64 = 779,825.84 : x
  2. Step 2: Convert to fraction form
    1,276,329.35/1,761,421.64 = 779,825.84/x
  3. Step 3: Cross multiply
    1,276,329.35x = 1,761,421.64 × 779,825.84
  4. Step 4: Simplify right side
    1,276,329.35x = 1,373,602,097,300.94
  5. Step 5: Solve for x
    x = 1,373,602,097,300.94/1,276,329.35
  6. Step 6: Final answer
    x = 1,076,212.89

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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.