Home / 1,384,059,008.11-1,909,795,965.69-840,617,155.54

Finding the Fourth Proportional to 1,384,059,008.11, 1,909,795,965.69 and 840,617,155.54

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Solution

The fourth proportional to 1,384,059,008.11, 1,909,795,965.69 and 840,617,155.54 is: 1,159,926,883.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,059,008.11 : 1,909,795,965.69 = 840,617,155.54 : x
  2. Step 2: Convert to fraction form
    1,384,059,008.11/1,909,795,965.69 = 840,617,155.54/x
  3. Step 3: Cross multiply
    1,384,059,008.11x = 1,909,795,965.69 × 840,617,155.54
  4. Step 4: Simplify right side
    1,384,059,008.11x = 1,605,407,252,340,095,232
  5. Step 5: Solve for x
    x = 1,605,407,252,340,095,232/1,384,059,008.11
  6. Step 6: Final answer
    x = 1,159,926,883.85

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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.