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Finding the Fourth Proportional to 620,615,423.80, 930,923,135.70 and 568,211,404.60

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Solution

The fourth proportional to 620,615,423.80, 930,923,135.70 and 568,211,404.60 is: 852,317,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,615,423.80 : 930,923,135.70 = 568,211,404.60 : x
  2. Step 2: Convert to fraction form
    620,615,423.80/930,923,135.70 = 568,211,404.60/x
  3. Step 3: Cross multiply
    620,615,423.80x = 930,923,135.70 × 568,211,404.60
  4. Step 4: Simplify right side
    620,615,423.80x = 528,961,142,510,733,440
  5. Step 5: Solve for x
    x = 528,961,142,510,733,440/620,615,423.80
  6. Step 6: Final answer
    x = 852,317,106.90

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1.5x scale

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.