Home / 790,886.43-1,091,428.56-428,310.45

Finding the Fourth Proportional to 790,886.43, 1,091,428.56 and 428,310.45

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Solution

The fourth proportional to 790,886.43, 1,091,428.56 and 428,310.45 is: 591,071.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,886.43 : 1,091,428.56 = 428,310.45 : x
  2. Step 2: Convert to fraction form
    790,886.43/1,091,428.56 = 428,310.45/x
  3. Step 3: Cross multiply
    790,886.43x = 1,091,428.56 × 428,310.45
  4. Step 4: Simplify right side
    790,886.43x = 467,470,257,676.45
  5. Step 5: Solve for x
    x = 467,470,257,676.45/790,886.43
  6. Step 6: Final answer
    x = 591,071.28

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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.