Home / 813,239.51-1,122,273.14-450,669.33

Finding the Fourth Proportional to 813,239.51, 1,122,273.14 and 450,669.33

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Solution

The fourth proportional to 813,239.51, 1,122,273.14 and 450,669.33 is: 621,925.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,239.51 : 1,122,273.14 = 450,669.33 : x
  2. Step 2: Convert to fraction form
    813,239.51/1,122,273.14 = 450,669.33/x
  3. Step 3: Cross multiply
    813,239.51x = 1,122,273.14 × 450,669.33
  4. Step 4: Simplify right side
    813,239.51x = 505,774,081,827.45
  5. Step 5: Solve for x
    x = 505,774,081,827.45/813,239.51
  6. Step 6: Final answer
    x = 621,925.13

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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.