Home / 1,080,364,152.40-1,490,079,949.78-929,912,873.12

Finding the Fourth Proportional to 1,080,364,152.40, 1,490,079,949.78 and 929,912,873.12

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Solution

The fourth proportional to 1,080,364,152.40, 1,490,079,949.78 and 929,912,873.12 is: 1,282,571,736.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,364,152.40 : 1,490,079,949.78 = 929,912,873.12 : x
  2. Step 2: Convert to fraction form
    1,080,364,152.40/1,490,079,949.78 = 929,912,873.12/x
  3. Step 3: Cross multiply
    1,080,364,152.40x = 1,490,079,949.78 × 929,912,873.12
  4. Step 4: Simplify right side
    1,080,364,152.40x = 1,385,644,527,278,425,088
  5. Step 5: Solve for x
    x = 1,385,644,527,278,425,088/1,080,364,152.40
  6. Step 6: Final answer
    x = 1,282,571,736.76

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Double scale
Find fourth proportional to 1,080,364,153.40, 1,490,079,951.16 and 929,912,874.12
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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.