Home / 812,921.76-1,121,828.40-468,756

Finding the Fourth Proportional to 812,921.76, 1,121,828.40 and 468,756

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Solution

The fourth proportional to 812,921.76, 1,121,828.40 and 468,756 is: 646,881.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,921.76 : 1,121,828.40 = 468,756 : x
  2. Step 2: Convert to fraction form
    812,921.76/1,121,828.40 = 468,756/x
  3. Step 3: Cross multiply
    812,921.76x = 1,121,828.40 × 468,756
  4. Step 4: Simplify right side
    812,921.76x = 525,863,793,470.40
  5. Step 5: Solve for x
    x = 525,863,793,470.40/812,921.76
  6. Step 6: Final answer
    x = 646,881.19

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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.