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Finding the Fourth Proportional to 670,277.60, 939,632.80 and 670,277.60

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Solution

The fourth proportional to 670,277.60, 939,632.80 and 670,277.60 is: 939,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,277.60 : 939,632.80 = 670,277.60 : x
  2. Step 2: Convert to fraction form
    670,277.60/939,632.80 = 670,277.60/x
  3. Step 3: Cross multiply
    670,277.60x = 939,632.80 × 670,277.60
  4. Step 4: Simplify right side
    670,277.60x = 629,814,818,065.28
  5. Step 5: Solve for x
    x = 629,814,818,065.28/670,277.60
  6. Step 6: Final answer
    x = 939,632.80

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Half scale
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Double scale
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Similar ratio
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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.