Home / 813,089.22-1,122,044.85-450,513.78

Finding the Fourth Proportional to 813,089.22, 1,122,044.85 and 450,513.78

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Solution

The fourth proportional to 813,089.22, 1,122,044.85 and 450,513.78 is: 621,698.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,089.22 : 1,122,044.85 = 450,513.78 : x
  2. Step 2: Convert to fraction form
    813,089.22/1,122,044.85 = 450,513.78/x
  3. Step 3: Cross multiply
    813,089.22x = 1,122,044.85 × 450,513.78
  4. Step 4: Simplify right side
    813,089.22x = 505,496,666,703.03
  5. Step 5: Solve for x
    x = 505,496,666,703.03/813,089.22
  6. Step 6: Final answer
    x = 621,698.89

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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.