Home / 383,069,137.04-528,637,023.48-215,807,405.12

Finding the Fourth Proportional to 383,069,137.04, 528,637,023.48 and 215,807,405.12

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Solution

The fourth proportional to 383,069,137.04, 528,637,023.48 and 215,807,405.12 is: 297,815,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,069,137.04 : 528,637,023.48 = 215,807,405.12 : x
  2. Step 2: Convert to fraction form
    383,069,137.04/528,637,023.48 = 215,807,405.12/x
  3. Step 3: Cross multiply
    383,069,137.04x = 528,637,023.48 × 215,807,405.12
  4. Step 4: Simplify right side
    383,069,137.04x = 114,083,784,287,579,312
  5. Step 5: Solve for x
    x = 114,083,784,287,579,312/383,069,137.04
  6. Step 6: Final answer
    x = 297,815,128.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.