Home / 1,391,018,585.32-1,919,651,669.22-764,509,220.20

Finding the Fourth Proportional to 1,391,018,585.32, 1,919,651,669.22 and 764,509,220.20

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Solution

The fourth proportional to 1,391,018,585.32, 1,919,651,669.22 and 764,509,220.20 is: 1,055,048,017.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,018,585.32 : 1,919,651,669.22 = 764,509,220.20 : x
  2. Step 2: Convert to fraction form
    1,391,018,585.32/1,919,651,669.22 = 764,509,220.20/x
  3. Step 3: Cross multiply
    1,391,018,585.32x = 1,919,651,669.22 × 764,509,220.20
  4. Step 4: Simplify right side
    1,391,018,585.32x = 1,467,591,400,691,010,560
  5. Step 5: Solve for x
    x = 1,467,591,400,691,010,560/1,391,018,585.32
  6. Step 6: Final answer
    x = 1,055,048,017.46

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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.