Home / 1,388,587.41-1,915,478.96-807,745.19

Finding the Fourth Proportional to 1,388,587.41, 1,915,478.96 and 807,745.19

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Solution

The fourth proportional to 1,388,587.41, 1,915,478.96 and 807,745.19 is: 1,114,239.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,587.41 : 1,915,478.96 = 807,745.19 : x
  2. Step 2: Convert to fraction form
    1,388,587.41/1,915,478.96 = 807,745.19/x
  3. Step 3: Cross multiply
    1,388,587.41x = 1,915,478.96 × 807,745.19
  4. Step 4: Simplify right side
    1,388,587.41x = 1,547,218,902,870.08
  5. Step 5: Solve for x
    x = 1,547,218,902,870.08/1,388,587.41
  6. Step 6: Final answer
    x = 1,114,239.47

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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.