Home / 405,201,532.54-607,862,834.10-128,861,761.90

Finding the Fourth Proportional to 405,201,532.54, 607,862,834.10 and 128,861,761.90

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Solution

The fourth proportional to 405,201,532.54, 607,862,834.10 and 128,861,761.90 is: 193,311,894.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,201,532.54 : 607,862,834.10 = 128,861,761.90 : x
  2. Step 2: Convert to fraction form
    405,201,532.54/607,862,834.10 = 128,861,761.90/x
  3. Step 3: Cross multiply
    405,201,532.54x = 607,862,834.10 × 128,861,761.90
  4. Step 4: Simplify right side
    405,201,532.54x = 78,330,275,795,653,408
  5. Step 5: Solve for x
    x = 78,330,275,795,653,408/405,201,532.54
  6. Step 6: Final answer
    x = 193,311,894.22

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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.