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Finding the Fourth Proportional to 675,108.54, 932,054.04 and 420,804.18

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Solution

The fourth proportional to 675,108.54, 932,054.04 and 420,804.18 is: 580,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,108.54 : 932,054.04 = 420,804.18 : x
  2. Step 2: Convert to fraction form
    675,108.54/932,054.04 = 420,804.18/x
  3. Step 3: Cross multiply
    675,108.54x = 932,054.04 × 420,804.18
  4. Step 4: Simplify right side
    675,108.54x = 392,212,236,017.89
  5. Step 5: Solve for x
    x = 392,212,236,017.89/675,108.54
  6. Step 6: Final answer
    x = 580,961.75

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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.