Home / 1,392,645,025.44-1,921,789,542.96-766,073,724.48

Finding the Fourth Proportional to 1,392,645,025.44, 1,921,789,542.96 and 766,073,724.48

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Solution

The fourth proportional to 1,392,645,025.44, 1,921,789,542.96 and 766,073,724.48 is: 1,057,148,408.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,645,025.44 : 1,921,789,542.96 = 766,073,724.48 : x
  2. Step 2: Convert to fraction form
    1,392,645,025.44/1,921,789,542.96 = 766,073,724.48/x
  3. Step 3: Cross multiply
    1,392,645,025.44x = 1,921,789,542.96 × 766,073,724.48
  4. Step 4: Simplify right side
    1,392,645,025.44x = 1,472,232,472,842,084,352
  5. Step 5: Solve for x
    x = 1,472,232,472,842,084,352/1,392,645,025.44
  6. Step 6: Final answer
    x = 1,057,148,408.93

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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.