Home / 739,446.21-1,020,435.76-399,914.46

Finding the Fourth Proportional to 739,446.21, 1,020,435.76 and 399,914.46

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Solution

The fourth proportional to 739,446.21, 1,020,435.76 and 399,914.46 is: 551,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,446.21 : 1,020,435.76 = 399,914.46 : x
  2. Step 2: Convert to fraction form
    739,446.21/1,020,435.76 = 399,914.46/x
  3. Step 3: Cross multiply
    739,446.21x = 1,020,435.76 × 399,914.46
  4. Step 4: Simplify right side
    739,446.21x = 408,087,011,322.80
  5. Step 5: Solve for x
    x = 408,087,011,322.80/739,446.21
  6. Step 6: Final answer
    x = 551,881.95

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1.5x scale

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.