Home / 1,279,152,145.80-1,918,728,218.70-1,258,744,811.40

Finding the Fourth Proportional to 1,279,152,145.80, 1,918,728,218.70 and 1,258,744,811.40

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Solution

The fourth proportional to 1,279,152,145.80, 1,918,728,218.70 and 1,258,744,811.40 is: 1,888,117,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,152,145.80 : 1,918,728,218.70 = 1,258,744,811.40 : x
  2. Step 2: Convert to fraction form
    1,279,152,145.80/1,918,728,218.70 = 1,258,744,811.40/x
  3. Step 3: Cross multiply
    1,279,152,145.80x = 1,918,728,218.70 × 1,258,744,811.40
  4. Step 4: Simplify right side
    1,279,152,145.80x = 2,415,189,189,775,389,696
  5. Step 5: Solve for x
    x = 2,415,189,189,775,389,696/1,279,152,145.80
  6. Step 6: Final answer
    x = 1,888,117,217.10

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Double scale
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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.