Home / 1,918,328.19-2,876,869.31-638,591.91

Finding the Fourth Proportional to 1,918,328.19, 2,876,869.31 and 638,591.91

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Solution

The fourth proportional to 1,918,328.19, 2,876,869.31 and 638,591.91 is: 957,680.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,328.19 : 2,876,869.31 = 638,591.91 : x
  2. Step 2: Convert to fraction form
    1,918,328.19/2,876,869.31 = 638,591.91/x
  3. Step 3: Cross multiply
    1,918,328.19x = 2,876,869.31 × 638,591.91
  4. Step 4: Simplify right side
    1,918,328.19x = 1,837,145,464,300.32
  5. Step 5: Solve for x
    x = 1,837,145,464,300.32/1,918,328.19
  6. Step 6: Final answer
    x = 957,680.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.