Home / 812,512.01-1,121,264.75-468,345.66

Finding the Fourth Proportional to 812,512.01, 1,121,264.75 and 468,345.66

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Solution

The fourth proportional to 812,512.01, 1,121,264.75 and 468,345.66 is: 646,315.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,512.01 : 1,121,264.75 = 468,345.66 : x
  2. Step 2: Convert to fraction form
    812,512.01/1,121,264.75 = 468,345.66/x
  3. Step 3: Cross multiply
    812,512.01x = 1,121,264.75 × 468,345.66
  4. Step 4: Simplify right side
    812,512.01x = 525,139,474,938.03
  5. Step 5: Solve for x
    x = 525,139,474,938.03/812,512.01
  6. Step 6: Final answer
    x = 646,315.96

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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.