Home / 645,138,483,068.80-967,707,724,603.20-422,235,971,862.40

Finding the Fourth Proportional to 645,138,483,068.80, 967,707,724,603.20 and 422,235,971,862.40

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Solution

The fourth proportional to 645,138,483,068.80, 967,707,724,603.20 and 422,235,971,862.40 is: 633,353,957,793.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,138,483,068.80 : 967,707,724,603.20 = 422,235,971,862.40 : x
  2. Step 2: Convert to fraction form
    645,138,483,068.80/967,707,724,603.20 = 422,235,971,862.40/x
  3. Step 3: Cross multiply
    645,138,483,068.80x = 967,707,724,603.20 × 422,235,971,862.40
  4. Step 4: Simplify right side
    645,138,483,068.80x = 408,601,011,576,583,902,724,096
  5. Step 5: Solve for x
    x = 408,601,011,576,583,902,724,096/645,138,483,068.80
  6. Step 6: Final answer
    x = 633,353,957,793.60

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Double scale
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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.