Home / 812,680.32-1,121,437.80-468,271.56

Finding the Fourth Proportional to 812,680.32, 1,121,437.80 and 468,271.56

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Solution

The fourth proportional to 812,680.32, 1,121,437.80 and 468,271.56 is: 646,179.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,680.32 : 1,121,437.80 = 468,271.56 : x
  2. Step 2: Convert to fraction form
    812,680.32/1,121,437.80 = 468,271.56/x
  3. Step 3: Cross multiply
    812,680.32x = 1,121,437.80 × 468,271.56
  4. Step 4: Simplify right side
    812,680.32x = 525,137,428,048.97
  5. Step 5: Solve for x
    x = 525,137,428,048.97/812,680.32
  6. Step 6: Final answer
    x = 646,179.58

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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.