Home / 805,915.56-1,112,140.32-438,381.09

Finding the Fourth Proportional to 805,915.56, 1,112,140.32 and 438,381.09

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Solution

The fourth proportional to 805,915.56, 1,112,140.32 and 438,381.09 is: 604,953.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,915.56 : 1,112,140.32 = 438,381.09 : x
  2. Step 2: Convert to fraction form
    805,915.56/1,112,140.32 = 438,381.09/x
  3. Step 3: Cross multiply
    805,915.56x = 1,112,140.32 × 438,381.09
  4. Step 4: Simplify right side
    805,915.56x = 487,541,285,714.55
  5. Step 5: Solve for x
    x = 487,541,285,714.55/805,915.56
  6. Step 6: Final answer
    x = 604,953.31

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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.