Home / 1,078,018.78-1,486,920-874,078.30

Finding the Fourth Proportional to 1,078,018.78, 1,486,920 and 874,078.30

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Solution

The fourth proportional to 1,078,018.78, 1,486,920 and 874,078.30 is: 1,205,623.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,018.78 : 1,486,920 = 874,078.30 : x
  2. Step 2: Convert to fraction form
    1,078,018.78/1,486,920 = 874,078.30/x
  3. Step 3: Cross multiply
    1,078,018.78x = 1,486,920 × 874,078.30
  4. Step 4: Simplify right side
    1,078,018.78x = 1,299,684,505,836
  5. Step 5: Solve for x
    x = 1,299,684,505,836/1,078,018.78
  6. Step 6: Final answer
    x = 1,205,623.25

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Double scale
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1.5x scale

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.