Home / 2,128,168,816.76-2,936,962,189.94-1,223,925,457.41

Finding the Fourth Proportional to 2,128,168,816.76, 2,936,962,189.94 and 1,223,925,457.41

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Solution

The fourth proportional to 2,128,168,816.76, 2,936,962,189.94 and 1,223,925,457.41 is: 1,689,068,443.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,168,816.76 : 2,936,962,189.94 = 1,223,925,457.41 : x
  2. Step 2: Convert to fraction form
    2,128,168,816.76/2,936,962,189.94 = 1,223,925,457.41/x
  3. Step 3: Cross multiply
    2,128,168,816.76x = 2,936,962,189.94 × 1,223,925,457.41
  4. Step 4: Simplify right side
    2,128,168,816.76x = 3,594,622,791,712,070,144
  5. Step 5: Solve for x
    x = 3,594,622,791,712,070,144/2,128,168,816.76
  6. Step 6: Final answer
    x = 1,689,068,443.91

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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.