Home / 739,303.11-1,020,239.37-399,771.36

Finding the Fourth Proportional to 739,303.11, 1,020,239.37 and 399,771.36

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Solution

The fourth proportional to 739,303.11, 1,020,239.37 and 399,771.36 is: 551,685.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,303.11 : 1,020,239.37 = 399,771.36 : x
  2. Step 2: Convert to fraction form
    739,303.11/1,020,239.37 = 399,771.36/x
  3. Step 3: Cross multiply
    739,303.11x = 1,020,239.37 × 399,771.36
  4. Step 4: Simplify right side
    739,303.11x = 407,862,480,470.44
  5. Step 5: Solve for x
    x = 407,862,480,470.44/739,303.11
  6. Step 6: Final answer
    x = 551,685.06

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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.