Home / 739,289.49-1,020,218.79-399,756.93

Finding the Fourth Proportional to 739,289.49, 1,020,218.79 and 399,756.93

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Solution

The fourth proportional to 739,289.49, 1,020,218.79 and 399,756.93 is: 551,664.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,289.49 : 1,020,218.79 = 399,756.93 : x
  2. Step 2: Convert to fraction form
    739,289.49/1,020,218.79 = 399,756.93/x
  3. Step 3: Cross multiply
    739,289.49x = 1,020,218.79 × 399,756.93
  4. Step 4: Simplify right side
    739,289.49x = 407,839,531,418.72
  5. Step 5: Solve for x
    x = 407,839,531,418.72/739,289.49
  6. Step 6: Final answer
    x = 551,664.18

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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.