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Finding the Fourth Proportional to 446,887.80, 670,331.70 and 313,918.20

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Solution

The fourth proportional to 446,887.80, 670,331.70 and 313,918.20 is: 470,877.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,887.80 : 670,331.70 = 313,918.20 : x
  2. Step 2: Convert to fraction form
    446,887.80/670,331.70 = 313,918.20/x
  3. Step 3: Cross multiply
    446,887.80x = 670,331.70 × 313,918.20
  4. Step 4: Simplify right side
    446,887.80x = 210,429,320,666.94
  5. Step 5: Solve for x
    x = 210,429,320,666.94/446,887.80
  6. Step 6: Final answer
    x = 470,877.30

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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.