Home / 626,384.40-864,412.79-339,904.54

Finding the Fourth Proportional to 626,384.40, 864,412.79 and 339,904.54

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Solution

The fourth proportional to 626,384.40, 864,412.79 and 339,904.54 is: 469,069.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,384.40 : 864,412.79 = 339,904.54 : x
  2. Step 2: Convert to fraction form
    626,384.40/864,412.79 = 339,904.54/x
  3. Step 3: Cross multiply
    626,384.40x = 864,412.79 × 339,904.54
  4. Step 4: Simplify right side
    626,384.40x = 293,817,831,755.07
  5. Step 5: Solve for x
    x = 293,817,831,755.07/626,384.40
  6. Step 6: Final answer
    x = 469,069.52

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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.