Home / 1,080,160.71-1,490,576.76-621,240.63

Finding the Fourth Proportional to 1,080,160.71, 1,490,576.76 and 621,240.63

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Solution

The fourth proportional to 1,080,160.71, 1,490,576.76 and 621,240.63 is: 857,286.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,160.71 : 1,490,576.76 = 621,240.63 : x
  2. Step 2: Convert to fraction form
    1,080,160.71/1,490,576.76 = 621,240.63/x
  3. Step 3: Cross multiply
    1,080,160.71x = 1,490,576.76 × 621,240.63
  4. Step 4: Simplify right side
    1,080,160.71x = 926,006,845,445.76
  5. Step 5: Solve for x
    x = 926,006,845,445.76/1,080,160.71
  6. Step 6: Final answer
    x = 857,286.18

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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.