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Finding the Fourth Proportional to 849,670.87, 1,172,408.57 and 487,028

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Solution

The fourth proportional to 849,670.87, 1,172,408.57 and 487,028 is: 672,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,670.87 : 1,172,408.57 = 487,028 : x
  2. Step 2: Convert to fraction form
    849,670.87/1,172,408.57 = 487,028/x
  3. Step 3: Cross multiply
    849,670.87x = 1,172,408.57 × 487,028
  4. Step 4: Simplify right side
    849,670.87x = 570,995,801,029.96
  5. Step 5: Solve for x
    x = 570,995,801,029.96/849,670.87
  6. Step 6: Final answer
    x = 672,019.98

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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.