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Finding the Fourth Proportional to 811,651, 1,120,082.22 and 453,955

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Solution

The fourth proportional to 811,651, 1,120,082.22 and 453,955 is: 626,460.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,651 : 1,120,082.22 = 453,955 : x
  2. Step 2: Convert to fraction form
    811,651/1,120,082.22 = 453,955/x
  3. Step 3: Cross multiply
    811,651x = 1,120,082.22 × 453,955
  4. Step 4: Simplify right side
    811,651x = 508,466,924,180.10
  5. Step 5: Solve for x
    x = 508,466,924,180.10/811,651
  6. Step 6: Final answer
    x = 626,460.05

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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.