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Finding the Fourth Proportional to 626,418.32, 864,457.84 and 339,938.41

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Solution

The fourth proportional to 626,418.32, 864,457.84 and 339,938.41 is: 469,115.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,418.32 : 864,457.84 = 339,938.41 : x
  2. Step 2: Convert to fraction form
    626,418.32/864,457.84 = 339,938.41/x
  3. Step 3: Cross multiply
    626,418.32x = 864,457.84 × 339,938.41
  4. Step 4: Simplify right side
    626,418.32x = 293,862,423,641.63
  5. Step 5: Solve for x
    x = 293,862,423,641.63/626,418.32
  6. Step 6: Final answer
    x = 469,115.31

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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.