Home / 1,264,618,036.12-1,745,355,435.42-728,667,053.94

Finding the Fourth Proportional to 1,264,618,036.12, 1,745,355,435.42 and 728,667,053.94

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Solution

The fourth proportional to 1,264,618,036.12, 1,745,355,435.42 and 728,667,053.94 is: 1,005,665,716.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264,618,036.12 : 1,745,355,435.42 = 728,667,053.94 : x
  2. Step 2: Convert to fraction form
    1,264,618,036.12/1,745,355,435.42 = 728,667,053.94/x
  3. Step 3: Cross multiply
    1,264,618,036.12x = 1,745,355,435.42 × 728,667,053.94
  4. Step 4: Simplify right side
    1,264,618,036.12x = 1,271,783,003,196,930,560
  5. Step 5: Solve for x
    x = 1,271,783,003,196,930,560/1,264,618,036.12
  6. Step 6: Final answer
    x = 1,005,665,716.34

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Double scale
Find fourth proportional to 1,264,618,037.12, 1,745,355,436.80 and 728,667,054.94
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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.