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Finding the Fourth Proportional to 709,773, 979,477.80 and 403,848.42

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Solution

The fourth proportional to 709,773, 979,477.80 and 403,848.42 is: 557,305.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,773 : 979,477.80 = 403,848.42 : x
  2. Step 2: Convert to fraction form
    709,773/979,477.80 = 403,848.42/x
  3. Step 3: Cross multiply
    709,773x = 979,477.80 × 403,848.42
  4. Step 4: Simplify right side
    709,773x = 395,560,561,955.08
  5. Step 5: Solve for x
    x = 395,560,561,955.08/709,773
  6. Step 6: Final answer
    x = 557,305.73

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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.