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Finding the Fourth Proportional to 557,298.64, 769,072.07 and 315,581.15

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Solution

The fourth proportional to 557,298.64, 769,072.07 and 315,581.15 is: 435,501.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,298.64 : 769,072.07 = 315,581.15 : x
  2. Step 2: Convert to fraction form
    557,298.64/769,072.07 = 315,581.15/x
  3. Step 3: Cross multiply
    557,298.64x = 769,072.07 × 315,581.15
  4. Step 4: Simplify right side
    557,298.64x = 242,704,648,283.48
  5. Step 5: Solve for x
    x = 242,704,648,283.48/557,298.64
  6. Step 6: Final answer
    x = 435,501.96

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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.