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Finding the Fourth Proportional to 430,105,903.60, 645,158,855.40 and 430,105,903.60

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Solution

The fourth proportional to 430,105,903.60, 645,158,855.40 and 430,105,903.60 is: 645,158,855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,105,903.60 : 645,158,855.40 = 430,105,903.60 : x
  2. Step 2: Convert to fraction form
    430,105,903.60/645,158,855.40 = 430,105,903.60/x
  3. Step 3: Cross multiply
    430,105,903.60x = 645,158,855.40 × 430,105,903.60
  4. Step 4: Simplify right side
    430,105,903.60x = 277,486,632,467,358,752
  5. Step 5: Solve for x
    x = 277,486,632,467,358,752/430,105,903.60
  6. Step 6: Final answer
    x = 645,158,855.40

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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.