Home / 1,279,152,136.80-1,918,728,205.20-1,258,744,802.40

Finding the Fourth Proportional to 1,279,152,136.80, 1,918,728,205.20 and 1,258,744,802.40

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Solution

The fourth proportional to 1,279,152,136.80, 1,918,728,205.20 and 1,258,744,802.40 is: 1,888,117,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,152,136.80 : 1,918,728,205.20 = 1,258,744,802.40 : x
  2. Step 2: Convert to fraction form
    1,279,152,136.80/1,918,728,205.20 = 1,258,744,802.40/x
  3. Step 3: Cross multiply
    1,279,152,136.80x = 1,918,728,205.20 × 1,258,744,802.40
  4. Step 4: Simplify right side
    1,279,152,136.80x = 2,415,189,155,513,780,736
  5. Step 5: Solve for x
    x = 2,415,189,155,513,780,736/1,279,152,136.80
  6. Step 6: Final answer
    x = 1,888,117,203.60

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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.