Home / 474,491,985.40-711,845,299.68-256,137,640.72

Finding the Fourth Proportional to 474,491,985.40, 711,845,299.68 and 256,137,640.72

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Solution

The fourth proportional to 474,491,985.40, 711,845,299.68 and 256,137,640.72 is: 384,264,394.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,491,985.40 : 711,845,299.68 = 256,137,640.72 : x
  2. Step 2: Convert to fraction form
    474,491,985.40/711,845,299.68 = 256,137,640.72/x
  3. Step 3: Cross multiply
    474,491,985.40x = 711,845,299.68 × 256,137,640.72
  4. Step 4: Simplify right side
    474,491,985.40x = 182,330,375,617,656,544
  5. Step 5: Solve for x
    x = 182,330,375,617,656,544/474,491,985.40
  6. Step 6: Final answer
    x = 384,264,394.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.