Home / 838,818.89-1,258,415.13-306,339.06

Finding the Fourth Proportional to 838,818.89, 1,258,415.13 and 306,339.06

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Solution

The fourth proportional to 838,818.89, 1,258,415.13 and 306,339.06 is: 459,576.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,818.89 : 1,258,415.13 = 306,339.06 : x
  2. Step 2: Convert to fraction form
    838,818.89/1,258,415.13 = 306,339.06/x
  3. Step 3: Cross multiply
    838,818.89x = 1,258,415.13 × 306,339.06
  4. Step 4: Simplify right side
    838,818.89x = 385,501,708,013.98
  5. Step 5: Solve for x
    x = 385,501,708,013.98/838,818.89
  6. Step 6: Final answer
    x = 459,576.81

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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.