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Finding the Fourth Proportional to 626,436, 864,482.29 and 339,956.15

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Solution

The fourth proportional to 626,436, 864,482.29 and 339,956.15 is: 469,139.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,436 : 864,482.29 = 339,956.15 : x
  2. Step 2: Convert to fraction form
    626,436/864,482.29 = 339,956.15/x
  3. Step 3: Cross multiply
    626,436x = 864,482.29 × 339,956.15
  4. Step 4: Simplify right side
    626,436x = 293,886,065,879.28
  5. Step 5: Solve for x
    x = 293,886,065,879.28/626,436
  6. Step 6: Final answer
    x = 469,139.81

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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.