Home / 1,220,580,940.40-1,830,871,410.60-391,532,980.40

Finding the Fourth Proportional to 1,220,580,940.40, 1,830,871,410.60 and 391,532,980.40

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Solution

The fourth proportional to 1,220,580,940.40, 1,830,871,410.60 and 391,532,980.40 is: 587,299,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,580,940.40 : 1,830,871,410.60 = 391,532,980.40 : x
  2. Step 2: Convert to fraction form
    1,220,580,940.40/1,830,871,410.60 = 391,532,980.40/x
  3. Step 3: Cross multiply
    1,220,580,940.40x = 1,830,871,410.60 × 391,532,980.40
  4. Step 4: Simplify right side
    1,220,580,940.40x = 716,846,540,121,370,112
  5. Step 5: Solve for x
    x = 716,846,540,121,370,112/1,220,580,940.40
  6. Step 6: Final answer
    x = 587,299,470.60

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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.