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Finding the Fourth Proportional to 670,296.60, 939,659.40 and 670,296.60

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Solution

The fourth proportional to 670,296.60, 939,659.40 and 670,296.60 is: 939,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,296.60 : 939,659.40 = 670,296.60 : x
  2. Step 2: Convert to fraction form
    670,296.60/939,659.40 = 670,296.60/x
  3. Step 3: Cross multiply
    670,296.60x = 939,659.40 × 670,296.60
  4. Step 4: Simplify right side
    670,296.60x = 629,850,500,978.04
  5. Step 5: Solve for x
    x = 629,850,500,978.04/670,296.60
  6. Step 6: Final answer
    x = 939,659.40

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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.