Home / 1,040,031,989.80-1,560,047,984.70-427,056,130.60

Finding the Fourth Proportional to 1,040,031,989.80, 1,560,047,984.70 and 427,056,130.60

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Solution

The fourth proportional to 1,040,031,989.80, 1,560,047,984.70 and 427,056,130.60 is: 640,584,195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,031,989.80 : 1,560,047,984.70 = 427,056,130.60 : x
  2. Step 2: Convert to fraction form
    1,040,031,989.80/1,560,047,984.70 = 427,056,130.60/x
  3. Step 3: Cross multiply
    1,040,031,989.80x = 1,560,047,984.70 × 427,056,130.60
  4. Step 4: Simplify right side
    1,040,031,989.80x = 666,228,055,896,310,016
  5. Step 5: Solve for x
    x = 666,228,055,896,310,016/1,040,031,989.80
  6. Step 6: Final answer
    x = 640,584,195.90

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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.