Home / 289,857,109.40-434,636,729.40-85,358,612.60

Finding the Fourth Proportional to 289,857,109.40, 434,636,729.40 and 85,358,612.60

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Solution

The fourth proportional to 289,857,109.40, 434,636,729.40 and 85,358,612.60 is: 127,994,059.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,857,109.40 : 434,636,729.40 = 85,358,612.60 : x
  2. Step 2: Convert to fraction form
    289,857,109.40/434,636,729.40 = 85,358,612.60/x
  3. Step 3: Cross multiply
    289,857,109.40x = 434,636,729.40 × 85,358,612.60
  4. Step 4: Simplify right side
    289,857,109.40x = 37,099,988,206,585,624
  5. Step 5: Solve for x
    x = 37,099,988,206,585,624/289,857,109.40
  6. Step 6: Final answer
    x = 127,994,059.84

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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.