Home / 412,201,513.60-618,302,270.40-139,572,280.60

Finding the Fourth Proportional to 412,201,513.60, 618,302,270.40 and 139,572,280.60

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Solution

The fourth proportional to 412,201,513.60, 618,302,270.40 and 139,572,280.60 is: 209,358,420.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,201,513.60 : 618,302,270.40 = 139,572,280.60 : x
  2. Step 2: Convert to fraction form
    412,201,513.60/618,302,270.40 = 139,572,280.60/x
  3. Step 3: Cross multiply
    412,201,513.60x = 618,302,270.40 × 139,572,280.60
  4. Step 4: Simplify right side
    412,201,513.60x = 86,297,857,979,885,872
  5. Step 5: Solve for x
    x = 86,297,857,979,885,872/412,201,513.60
  6. Step 6: Final answer
    x = 209,358,420.90

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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.