Home / 445,355,455.40-668,201,144.70-215,527,999.40

Finding the Fourth Proportional to 445,355,455.40, 668,201,144.70 and 215,527,999.40

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Solution

The fourth proportional to 445,355,455.40, 668,201,144.70 and 215,527,999.40 is: 323,373,283.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,355,455.40 : 668,201,144.70 = 215,527,999.40 : x
  2. Step 2: Convert to fraction form
    445,355,455.40/668,201,144.70 = 215,527,999.40/x
  3. Step 3: Cross multiply
    445,355,455.40x = 668,201,144.70 × 215,527,999.40
  4. Step 4: Simplify right side
    445,355,455.40x = 144,016,055,913,980,928
  5. Step 5: Solve for x
    x = 144,016,055,913,980,928/445,355,455.40
  6. Step 6: Final answer
    x = 323,373,283.45

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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.