Home / 813,240.51-1,122,274.52-450,670.33

Finding the Fourth Proportional to 813,240.51, 1,122,274.52 and 450,670.33

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Solution

The fourth proportional to 813,240.51, 1,122,274.52 and 450,670.33 is: 621,926.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,240.51 : 1,122,274.52 = 450,670.33 : x
  2. Step 2: Convert to fraction form
    813,240.51/1,122,274.52 = 450,670.33/x
  3. Step 3: Cross multiply
    813,240.51x = 1,122,274.52 × 450,670.33
  4. Step 4: Simplify right side
    813,240.51x = 505,775,828,278.99
  5. Step 5: Solve for x
    x = 505,775,828,278.99/813,240.51
  6. Step 6: Final answer
    x = 621,926.51

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Double scale
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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.