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Finding the Fourth Proportional to 670,297.60, 939,660.80 and 670,297.60

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Solution

The fourth proportional to 670,297.60, 939,660.80 and 670,297.60 is: 939,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,297.60 : 939,660.80 = 670,297.60 : x
  2. Step 2: Convert to fraction form
    670,297.60/939,660.80 = 670,297.60/x
  3. Step 3: Cross multiply
    670,297.60x = 939,660.80 × 670,297.60
  4. Step 4: Simplify right side
    670,297.60x = 629,852,379,054.08
  5. Step 5: Solve for x
    x = 629,852,379,054.08/670,297.60
  6. Step 6: Final answer
    x = 939,660.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.