Home / 811,214.43-1,119,625.67-521,188.55

Finding the Fourth Proportional to 811,214.43, 1,119,625.67 and 521,188.55

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Solution

The fourth proportional to 811,214.43, 1,119,625.67 and 521,188.55 is: 719,336.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,214.43 : 1,119,625.67 = 521,188.55 : x
  2. Step 2: Convert to fraction form
    811,214.43/1,119,625.67 = 521,188.55/x
  3. Step 3: Cross multiply
    811,214.43x = 1,119,625.67 × 521,188.55
  4. Step 4: Simplify right side
    811,214.43x = 583,536,079,393.52
  5. Step 5: Solve for x
    x = 583,536,079,393.52/811,214.43
  6. Step 6: Final answer
    x = 719,336.42

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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.