Home / 1,045,161.28-1,442,583.84-642,520

Finding the Fourth Proportional to 1,045,161.28, 1,442,583.84 and 642,520

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Solution

The fourth proportional to 1,045,161.28, 1,442,583.84 and 642,520 is: 886,838.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045,161.28 : 1,442,583.84 = 642,520 : x
  2. Step 2: Convert to fraction form
    1,045,161.28/1,442,583.84 = 642,520/x
  3. Step 3: Cross multiply
    1,045,161.28x = 1,442,583.84 × 642,520
  4. Step 4: Simplify right side
    1,045,161.28x = 926,888,968,876.80
  5. Step 5: Solve for x
    x = 926,888,968,876.80/1,045,161.28
  6. Step 6: Final answer
    x = 886,838.22

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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.