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Finding the Fourth Proportional to 675,303.98, 931,816.05 and 388,768.70

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Solution

The fourth proportional to 675,303.98, 931,816.05 and 388,768.70 is: 536,441.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,303.98 : 931,816.05 = 388,768.70 : x
  2. Step 2: Convert to fraction form
    675,303.98/931,816.05 = 388,768.70/x
  3. Step 3: Cross multiply
    675,303.98x = 931,816.05 × 388,768.70
  4. Step 4: Simplify right side
    675,303.98x = 362,260,914,397.64
  5. Step 5: Solve for x
    x = 362,260,914,397.64/675,303.98
  6. Step 6: Final answer
    x = 536,441.25

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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.