Home / 811,100.86-1,217,382.55-432,337.06

Finding the Fourth Proportional to 811,100.86, 1,217,382.55 and 432,337.06

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Solution

The fourth proportional to 811,100.86, 1,217,382.55 and 432,337.06 is: 648,895.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,100.86 : 1,217,382.55 = 432,337.06 : x
  2. Step 2: Convert to fraction form
    811,100.86/1,217,382.55 = 432,337.06/x
  3. Step 3: Cross multiply
    811,100.86x = 1,217,382.55 × 432,337.06
  4. Step 4: Simplify right side
    811,100.86x = 526,319,593,003.19
  5. Step 5: Solve for x
    x = 526,319,593,003.19/811,100.86
  6. Step 6: Final answer
    x = 648,895.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.