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Finding the Fourth Proportional to 556,784.38, 768,364.50 and 302,135.53

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Solution

The fourth proportional to 556,784.38, 768,364.50 and 302,135.53 is: 416,948.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,784.38 : 768,364.50 = 302,135.53 : x
  2. Step 2: Convert to fraction form
    556,784.38/768,364.50 = 302,135.53/x
  3. Step 3: Cross multiply
    556,784.38x = 768,364.50 × 302,135.53
  4. Step 4: Simplify right side
    556,784.38x = 232,150,215,440.69
  5. Step 5: Solve for x
    x = 232,150,215,440.69/556,784.38
  6. Step 6: Final answer
    x = 416,948.15

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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.