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Finding the Fourth Proportional to 626,437.75, 864,484.70 and 339,957.90

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Solution

The fourth proportional to 626,437.75, 864,484.70 and 339,957.90 is: 469,142.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,437.75 : 864,484.70 = 339,957.90 : x
  2. Step 2: Convert to fraction form
    626,437.75/864,484.70 = 339,957.90/x
  3. Step 3: Cross multiply
    626,437.75x = 864,484.70 × 339,957.90
  4. Step 4: Simplify right side
    626,437.75x = 293,888,403,194.13
  5. Step 5: Solve for x
    x = 293,888,403,194.13/626,437.75
  6. Step 6: Final answer
    x = 469,142.23

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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.