Home / 689,725,692.66-953,066,514.99-491,142,424.88

Finding the Fourth Proportional to 689,725,692.66, 953,066,514.99 and 491,142,424.88

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Solution

The fourth proportional to 689,725,692.66, 953,066,514.99 and 491,142,424.88 is: 678,663,132.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,725,692.66 : 953,066,514.99 = 491,142,424.88 : x
  2. Step 2: Convert to fraction form
    689,725,692.66/953,066,514.99 = 491,142,424.88/x
  3. Step 3: Cross multiply
    689,725,692.66x = 953,066,514.99 × 491,142,424.88
  4. Step 4: Simplify right side
    689,725,692.66x = 468,091,399,245,583,680
  5. Step 5: Solve for x
    x = 468,091,399,245,583,680/689,725,692.66
  6. Step 6: Final answer
    x = 678,663,132.64

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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.