Home / 1,189,477,259.40-1,641,382,382.31-687,718,235.69

Finding the Fourth Proportional to 1,189,477,259.40, 1,641,382,382.31 and 687,718,235.69

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Solution

The fourth proportional to 1,189,477,259.40, 1,641,382,382.31 and 687,718,235.69 is: 948,995,524.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,477,259.40 : 1,641,382,382.31 = 687,718,235.69 : x
  2. Step 2: Convert to fraction form
    1,189,477,259.40/1,641,382,382.31 = 687,718,235.69/x
  3. Step 3: Cross multiply
    1,189,477,259.40x = 1,641,382,382.31 × 687,718,235.69
  4. Step 4: Simplify right side
    1,189,477,259.40x = 1,128,808,596,046,675,200
  5. Step 5: Solve for x
    x = 1,128,808,596,046,675,200/1,189,477,259.40
  6. Step 6: Final answer
    x = 948,995,524.82

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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.