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Finding the Fourth Proportional to 557,554.36, 769,369.50 and 315,788.68

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Solution

The fourth proportional to 557,554.36, 769,369.50 and 315,788.68 is: 435,756.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,554.36 : 769,369.50 = 315,788.68 : x
  2. Step 2: Convert to fraction form
    557,554.36/769,369.50 = 315,788.68/x
  3. Step 3: Cross multiply
    557,554.36x = 769,369.50 × 315,788.68
  4. Step 4: Simplify right side
    557,554.36x = 242,958,178,837.26
  5. Step 5: Solve for x
    x = 242,958,178,837.26/557,554.36
  6. Step 6: Final answer
    x = 435,756.93

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1.5x scale

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.