Home / 1,388,081.40-1,915,539.21-776,227.16

Finding the Fourth Proportional to 1,388,081.40, 1,915,539.21 and 776,227.16

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Solution

The fourth proportional to 1,388,081.40, 1,915,539.21 and 776,227.16 is: 1,071,186.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,081.40 : 1,915,539.21 = 776,227.16 : x
  2. Step 2: Convert to fraction form
    1,388,081.40/1,915,539.21 = 776,227.16/x
  3. Step 3: Cross multiply
    1,388,081.40x = 1,915,539.21 × 776,227.16
  4. Step 4: Simplify right side
    1,388,081.40x = 1,486,893,551,269.25
  5. Step 5: Solve for x
    x = 1,486,893,551,269.25/1,388,081.40
  6. Step 6: Final answer
    x = 1,071,186.14

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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.