Home / 740,678.35-1,022,131.03-401,139.79

Finding the Fourth Proportional to 740,678.35, 1,022,131.03 and 401,139.79

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Solution

The fourth proportional to 740,678.35, 1,022,131.03 and 401,139.79 is: 553,570.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,678.35 : 1,022,131.03 = 401,139.79 : x
  2. Step 2: Convert to fraction form
    740,678.35/1,022,131.03 = 401,139.79/x
  3. Step 3: Cross multiply
    740,678.35x = 1,022,131.03 × 401,139.79
  4. Step 4: Simplify right side
    740,678.35x = 410,017,426,726.68
  5. Step 5: Solve for x
    x = 410,017,426,726.68/740,678.35
  6. Step 6: Final answer
    x = 553,570.15

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Double scale
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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.