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Finding the Fourth Proportional to 555,485.81, 766,569.71 and 300,838.01

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Solution

The fourth proportional to 555,485.81, 766,569.71 and 300,838.01 is: 415,156.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,485.81 : 766,569.71 = 300,838.01 : x
  2. Step 2: Convert to fraction form
    555,485.81/766,569.71 = 300,838.01/x
  3. Step 3: Cross multiply
    555,485.81x = 766,569.71 × 300,838.01
  4. Step 4: Simplify right side
    555,485.81x = 230,613,304,578.49
  5. Step 5: Solve for x
    x = 230,613,304,578.49/555,485.81
  6. Step 6: Final answer
    x = 415,156.07

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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.