Home / 457,659,969.60-686,489,954.40-212,016,129.60

Finding the Fourth Proportional to 457,659,969.60, 686,489,954.40 and 212,016,129.60

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Solution

The fourth proportional to 457,659,969.60, 686,489,954.40 and 212,016,129.60 is: 318,024,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,659,969.60 : 686,489,954.40 = 212,016,129.60 : x
  2. Step 2: Convert to fraction form
    457,659,969.60/686,489,954.40 = 212,016,129.60/x
  3. Step 3: Cross multiply
    457,659,969.60x = 686,489,954.40 × 212,016,129.60
  4. Step 4: Simplify right side
    457,659,969.60x = 145,546,943,141,168,480
  5. Step 5: Solve for x
    x = 145,546,943,141,168,480/457,659,969.60
  6. Step 6: Final answer
    x = 318,024,194.40

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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.