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Finding the Fourth Proportional to 557,085.78, 768,787.29 and 302,436.75

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Solution

The fourth proportional to 557,085.78, 768,787.29 and 302,436.75 is: 417,367.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,085.78 : 768,787.29 = 302,436.75 : x
  2. Step 2: Convert to fraction form
    557,085.78/768,787.29 = 302,436.75/x
  3. Step 3: Cross multiply
    557,085.78x = 768,787.29 × 302,436.75
  4. Step 4: Simplify right side
    557,085.78x = 232,509,529,428.91
  5. Step 5: Solve for x
    x = 232,509,529,428.91/557,085.78
  6. Step 6: Final answer
    x = 417,367.55

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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.