Home / 1,179,594,456.12-1,627,879,446.72-643,775,459.58

Finding the Fourth Proportional to 1,179,594,456.12, 1,627,879,446.72 and 643,775,459.58

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Solution

The fourth proportional to 1,179,594,456.12, 1,627,879,446.72 and 643,775,459.58 is: 888,431,471.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,594,456.12 : 1,627,879,446.72 = 643,775,459.58 : x
  2. Step 2: Convert to fraction form
    1,179,594,456.12/1,627,879,446.72 = 643,775,459.58/x
  3. Step 3: Cross multiply
    1,179,594,456.12x = 1,627,879,446.72 × 643,775,459.58
  4. Step 4: Simplify right side
    1,179,594,456.12x = 1,047,988,838,953,004,160
  5. Step 5: Solve for x
    x = 1,047,988,838,953,004,160/1,179,594,456.12
  6. Step 6: Final answer
    x = 888,431,471.95

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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.