Home / 678,941.35-936,954.69-373,036.81

Finding the Fourth Proportional to 678,941.35, 936,954.69 and 373,036.81

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Solution

The fourth proportional to 678,941.35, 936,954.69 and 373,036.81 is: 514,799.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,941.35 : 936,954.69 = 373,036.81 : x
  2. Step 2: Convert to fraction form
    678,941.35/936,954.69 = 373,036.81/x
  3. Step 3: Cross multiply
    678,941.35x = 936,954.69 × 373,036.81
  4. Step 4: Simplify right side
    678,941.35x = 349,518,588,672.14
  5. Step 5: Solve for x
    x = 349,518,588,672.14/678,941.35
  6. Step 6: Final answer
    x = 514,799.38

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