Home / 12,918,128.80-19,379,817.60-4,399,326.40

Finding the Fourth Proportional to 12,918,128.80, 19,379,817.60 and 4,399,326.40

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Solution

The fourth proportional to 12,918,128.80, 19,379,817.60 and 4,399,326.40 is: 6,599,883.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918,128.80 : 19,379,817.60 = 4,399,326.40 : x
  2. Step 2: Convert to fraction form
    12,918,128.80/19,379,817.60 = 4,399,326.40/x
  3. Step 3: Cross multiply
    12,918,128.80x = 19,379,817.60 × 4,399,326.40
  4. Step 4: Simplify right side
    12,918,128.80x = 85,258,143,194,864.66
  5. Step 5: Solve for x
    x = 85,258,143,194,864.66/12,918,128.80
  6. Step 6: Final answer
    x = 6,599,883.35

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1.5x scale

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.