Home / 840,540,900.40-1,257,410,128.20-738,504,228.40

Finding the Fourth Proportional to 840,540,900.40, 1,257,410,128.20 and 738,504,228.40

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Solution

The fourth proportional to 840,540,900.40, 1,257,410,128.20 and 738,504,228.40 is: 1,104,768,008.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,540,900.40 : 1,257,410,128.20 = 738,504,228.40 : x
  2. Step 2: Convert to fraction form
    840,540,900.40/1,257,410,128.20 = 738,504,228.40/x
  3. Step 3: Cross multiply
    840,540,900.40x = 1,257,410,128.20 × 738,504,228.40
  4. Step 4: Simplify right side
    840,540,900.40x = 928,602,696,508,686,080
  5. Step 5: Solve for x
    x = 928,602,696,508,686,080/840,540,900.40
  6. Step 6: Final answer
    x = 1,104,768,008.39

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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.