Home / 670,221.40-1,005,332.10-403,844.80

Finding the Fourth Proportional to 670,221.40, 1,005,332.10 and 403,844.80

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Solution

The fourth proportional to 670,221.40, 1,005,332.10 and 403,844.80 is: 605,767.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,221.40 : 1,005,332.10 = 403,844.80 : x
  2. Step 2: Convert to fraction form
    670,221.40/1,005,332.10 = 403,844.80/x
  3. Step 3: Cross multiply
    670,221.40x = 1,005,332.10 × 403,844.80
  4. Step 4: Simplify right side
    670,221.40x = 405,998,140,858.08
  5. Step 5: Solve for x
    x = 405,998,140,858.08/670,221.40
  6. Step 6: Final answer
    x = 605,767.20

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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.