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Finding the Fourth Proportional to 626,534.28, 864,223.94 and 371,705

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Solution

The fourth proportional to 626,534.28, 864,223.94 and 371,705 is: 512,719.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,534.28 : 864,223.94 = 371,705 : x
  2. Step 2: Convert to fraction form
    626,534.28/864,223.94 = 371,705/x
  3. Step 3: Cross multiply
    626,534.28x = 864,223.94 × 371,705
  4. Step 4: Simplify right side
    626,534.28x = 321,236,359,617.70
  5. Step 5: Solve for x
    x = 321,236,359,617.70/626,534.28
  6. Step 6: Final answer
    x = 512,719.53

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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.