Home / 430,857,986.40-646,286,979.60-256,518,766.35

Finding the Fourth Proportional to 430,857,986.40, 646,286,979.60 and 256,518,766.35

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Solution

The fourth proportional to 430,857,986.40, 646,286,979.60 and 256,518,766.35 is: 384,778,149.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,857,986.40 : 646,286,979.60 = 256,518,766.35 : x
  2. Step 2: Convert to fraction form
    430,857,986.40/646,286,979.60 = 256,518,766.35/x
  3. Step 3: Cross multiply
    430,857,986.40x = 646,286,979.60 × 256,518,766.35
  4. Step 4: Simplify right side
    430,857,986.40x = 165,784,738,715,059,616
  5. Step 5: Solve for x
    x = 165,784,738,715,059,616/430,857,986.40
  6. Step 6: Final answer
    x = 384,778,149.53

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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.