Home / 805,685.16-1,111,821.96-443,108.64

Finding the Fourth Proportional to 805,685.16, 1,111,821.96 and 443,108.64

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Solution

The fourth proportional to 805,685.16, 1,111,821.96 and 443,108.64 is: 611,476.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,685.16 : 1,111,821.96 = 443,108.64 : x
  2. Step 2: Convert to fraction form
    805,685.16/1,111,821.96 = 443,108.64/x
  3. Step 3: Cross multiply
    805,685.16x = 1,111,821.96 × 443,108.64
  4. Step 4: Simplify right side
    805,685.16x = 492,657,916,617.73
  5. Step 5: Solve for x
    x = 492,657,916,617.73/805,685.16
  6. Step 6: Final answer
    x = 611,476.97

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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.