Home / 1,311,228,056.80-1,966,796,595.60-328,663,194.40

Finding the Fourth Proportional to 1,311,228,056.80, 1,966,796,595.60 and 328,663,194.40

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Solution

The fourth proportional to 1,311,228,056.80, 1,966,796,595.60 and 328,663,194.40 is: 492,983,389.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,228,056.80 : 1,966,796,595.60 = 328,663,194.40 : x
  2. Step 2: Convert to fraction form
    1,311,228,056.80/1,966,796,595.60 = 328,663,194.40/x
  3. Step 3: Cross multiply
    1,311,228,056.80x = 1,966,796,595.60 × 328,663,194.40
  4. Step 4: Simplify right side
    1,311,228,056.80x = 646,413,651,844,940,928
  5. Step 5: Solve for x
    x = 646,413,651,844,940,928/1,311,228,056.80
  6. Step 6: Final answer
    x = 492,983,389.50

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.