Home / 1,278,150,076.60-1,917,225,114.90-727,152,047.80

Finding the Fourth Proportional to 1,278,150,076.60, 1,917,225,114.90 and 727,152,047.80

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Solution

The fourth proportional to 1,278,150,076.60, 1,917,225,114.90 and 727,152,047.80 is: 1,090,728,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,150,076.60 : 1,917,225,114.90 = 727,152,047.80 : x
  2. Step 2: Convert to fraction form
    1,278,150,076.60/1,917,225,114.90 = 727,152,047.80/x
  3. Step 3: Cross multiply
    1,278,150,076.60x = 1,917,225,114.90 × 727,152,047.80
  4. Step 4: Simplify right side
    1,278,150,076.60x = 1,394,114,168,393,125,376
  5. Step 5: Solve for x
    x = 1,394,114,168,393,125,376/1,278,150,076.60
  6. Step 6: Final answer
    x = 1,090,728,071.70

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Double scale
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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.