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Finding the Fourth Proportional to 543,851.51, 750,305.72 and 400,951.31

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Solution

The fourth proportional to 543,851.51, 750,305.72 and 400,951.31 is: 553,158.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,851.51 : 750,305.72 = 400,951.31 : x
  2. Step 2: Convert to fraction form
    543,851.51/750,305.72 = 400,951.31/x
  3. Step 3: Cross multiply
    543,851.51x = 750,305.72 × 400,951.31
  4. Step 4: Simplify right side
    543,851.51x = 300,836,059,329.74
  5. Step 5: Solve for x
    x = 300,836,059,329.74/543,851.51
  6. Step 6: Final answer
    x = 553,158.45

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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.