Home / 1,388,459.84-1,916,251.97-776,646.59

Finding the Fourth Proportional to 1,388,459.84, 1,916,251.97 and 776,646.59

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Solution

The fourth proportional to 1,388,459.84, 1,916,251.97 and 776,646.59 is: 1,071,871.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,459.84 : 1,916,251.97 = 776,646.59 : x
  2. Step 2: Convert to fraction form
    1,388,459.84/1,916,251.97 = 776,646.59/x
  3. Step 3: Cross multiply
    1,388,459.84x = 1,916,251.97 × 776,646.59
  4. Step 4: Simplify right side
    1,388,459.84x = 1,488,250,544,616.79
  5. Step 5: Solve for x
    x = 1,488,250,544,616.79/1,388,459.84
  6. Step 6: Final answer
    x = 1,071,871.51

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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.