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Finding the Fourth Proportional to 556,787.53, 768,368.89 and 302,138.74

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Solution

The fourth proportional to 556,787.53, 768,368.89 and 302,138.74 is: 416,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,787.53 : 768,368.89 = 302,138.74 : x
  2. Step 2: Convert to fraction form
    556,787.53/768,368.89 = 302,138.74/x
  3. Step 3: Cross multiply
    556,787.53x = 768,368.89 × 302,138.74
  4. Step 4: Simplify right side
    556,787.53x = 232,154,008,279.80
  5. Step 5: Solve for x
    x = 232,154,008,279.80/556,787.53
  6. Step 6: Final answer
    x = 416,952.60

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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.