Home / 1,255,815,955.78-1,884,007,724.62-415,456,728.10

Finding the Fourth Proportional to 1,255,815,955.78, 1,884,007,724.62 and 415,456,728.10

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Solution

The fourth proportional to 1,255,815,955.78, 1,884,007,724.62 and 415,456,728.10 is: 623,278,977.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255,815,955.78 : 1,884,007,724.62 = 415,456,728.10 : x
  2. Step 2: Convert to fraction form
    1,255,815,955.78/1,884,007,724.62 = 415,456,728.10/x
  3. Step 3: Cross multiply
    1,255,815,955.78x = 1,884,007,724.62 × 415,456,728.10
  4. Step 4: Simplify right side
    1,255,815,955.78x = 782,723,684,985,751,040
  5. Step 5: Solve for x
    x = 782,723,684,985,751,040/1,255,815,955.78
  6. Step 6: Final answer
    x = 623,278,977.61

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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.