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Finding the Fourth Proportional to 487,652.76, 672,986.94 and 272,780.01

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Solution

The fourth proportional to 487,652.76, 672,986.94 and 272,780.01 is: 376,451.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,652.76 : 672,986.94 = 272,780.01 : x
  2. Step 2: Convert to fraction form
    487,652.76/672,986.94 = 272,780.01/x
  3. Step 3: Cross multiply
    487,652.76x = 672,986.94 × 272,780.01
  4. Step 4: Simplify right side
    487,652.76x = 183,577,384,223.07
  5. Step 5: Solve for x
    x = 183,577,384,223.07/487,652.76
  6. Step 6: Final answer
    x = 376,451.03

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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.