Home / 1,189,477,289.96-1,641,382,424.40-687,718,266.20

Finding the Fourth Proportional to 1,189,477,289.96, 1,641,382,424.40 and 687,718,266.20

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Solution

The fourth proportional to 1,189,477,289.96, 1,641,382,424.40 and 687,718,266.20 is: 948,995,566.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,477,289.96 : 1,641,382,424.40 = 687,718,266.20 : x
  2. Step 2: Convert to fraction form
    1,189,477,289.96/1,641,382,424.40 = 687,718,266.20/x
  3. Step 3: Cross multiply
    1,189,477,289.96x = 1,641,382,424.40 × 687,718,266.20
  4. Step 4: Simplify right side
    1,189,477,289.96x = 1,128,808,675,079,520,768
  5. Step 5: Solve for x
    x = 1,128,808,675,079,520,768/1,189,477,289.96
  6. Step 6: Final answer
    x = 948,995,566.88

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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.