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Finding the Fourth Proportional to 557,697.76, 769,858.63 and 376,655.16

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Solution

The fourth proportional to 557,697.76, 769,858.63 and 376,655.16 is: 519,943.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,697.76 : 769,858.63 = 376,655.16 : x
  2. Step 2: Convert to fraction form
    557,697.76/769,858.63 = 376,655.16/x
  3. Step 3: Cross multiply
    557,697.76x = 769,858.63 × 376,655.16
  4. Step 4: Simplify right side
    557,697.76x = 289,971,227,405.36
  5. Step 5: Solve for x
    x = 289,971,227,405.36/557,697.76
  6. Step 6: Final answer
    x = 519,943.33

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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.