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Finding the Fourth Proportional to 648,112.70, 972,169.05 and 606,640.70

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Solution

The fourth proportional to 648,112.70, 972,169.05 and 606,640.70 is: 909,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,112.70 : 972,169.05 = 606,640.70 : x
  2. Step 2: Convert to fraction form
    648,112.70/972,169.05 = 606,640.70/x
  3. Step 3: Cross multiply
    648,112.70x = 972,169.05 × 606,640.70
  4. Step 4: Simplify right side
    648,112.70x = 589,757,313,010.34
  5. Step 5: Solve for x
    x = 589,757,313,010.34/648,112.70
  6. Step 6: Final answer
    x = 909,961.05

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.