Home / 1,918,778.15-2,878,127.33-639,478.32

Finding the Fourth Proportional to 1,918,778.15, 2,878,127.33 and 639,478.32

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Solution

The fourth proportional to 1,918,778.15, 2,878,127.33 and 639,478.32 is: 959,204.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,778.15 : 2,878,127.33 = 639,478.32 : x
  2. Step 2: Convert to fraction form
    1,918,778.15/2,878,127.33 = 639,478.32/x
  3. Step 3: Cross multiply
    1,918,778.15x = 2,878,127.33 × 639,478.32
  4. Step 4: Simplify right side
    1,918,778.15x = 1,840,500,026,537.09
  5. Step 5: Solve for x
    x = 1,840,500,026,537.09/1,918,778.15
  6. Step 6: Final answer
    x = 959,204.18

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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.