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Finding the Fourth Proportional to 675,615.33, 932,686.70 and 389,080.06

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Solution

The fourth proportional to 675,615.33, 932,686.70 and 389,080.06 is: 537,124.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,615.33 : 932,686.70 = 389,080.06 : x
  2. Step 2: Convert to fraction form
    675,615.33/932,686.70 = 389,080.06/x
  3. Step 3: Cross multiply
    675,615.33x = 932,686.70 × 389,080.06
  4. Step 4: Simplify right side
    675,615.33x = 362,889,795,108.66
  5. Step 5: Solve for x
    x = 362,889,795,108.66/675,615.33
  6. Step 6: Final answer
    x = 537,124.87

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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.