Home / 412,201,517.60-618,302,276.40-139,572,284.60

Finding the Fourth Proportional to 412,201,517.60, 618,302,276.40 and 139,572,284.60

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Solution

The fourth proportional to 412,201,517.60, 618,302,276.40 and 139,572,284.60 is: 209,358,426.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,201,517.60 : 618,302,276.40 = 139,572,284.60 : x
  2. Step 2: Convert to fraction form
    412,201,517.60/618,302,276.40 = 139,572,284.60/x
  3. Step 3: Cross multiply
    412,201,517.60x = 618,302,276.40 × 139,572,284.60
  4. Step 4: Simplify right side
    412,201,517.60x = 86,297,861,290,528,656
  5. Step 5: Solve for x
    x = 86,297,861,290,528,656/412,201,517.60
  6. Step 6: Final answer
    x = 209,358,426.90

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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.