Home / 1,918,688.72-2,877,070.35-638,845.39

Finding the Fourth Proportional to 1,918,688.72, 2,877,070.35 and 638,845.39

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Solution

The fourth proportional to 1,918,688.72, 2,877,070.35 and 638,845.39 is: 957,947.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,688.72 : 2,877,070.35 = 638,845.39 : x
  2. Step 2: Convert to fraction form
    1,918,688.72/2,877,070.35 = 638,845.39/x
  3. Step 3: Cross multiply
    1,918,688.72x = 2,877,070.35 × 638,845.39
  4. Step 4: Simplify right side
    1,918,688.72x = 1,838,003,122,610.51
  5. Step 5: Solve for x
    x = 1,838,003,122,610.51/1,918,688.72
  6. Step 6: Final answer
    x = 957,947.53

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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.