Home / 289,845,943.40-434,619,980.40-85,347,446.60

Finding the Fourth Proportional to 289,845,943.40, 434,619,980.40 and 85,347,446.60

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Solution

The fourth proportional to 289,845,943.40, 434,619,980.40 and 85,347,446.60 is: 127,977,314.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,845,943.40 : 434,619,980.40 = 85,347,446.60 : x
  2. Step 2: Convert to fraction form
    289,845,943.40/434,619,980.40 = 85,347,446.60/x
  3. Step 3: Cross multiply
    289,845,943.40x = 434,619,980.40 × 85,347,446.60
  4. Step 4: Simplify right side
    289,845,943.40x = 37,093,705,568,482,040
  5. Step 5: Solve for x
    x = 37,093,705,568,482,040/289,845,943.40
  6. Step 6: Final answer
    x = 127,977,314.89

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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.