Home / 1,028,979-1,543,469.40-429,613.43

Finding the Fourth Proportional to 1,028,979, 1,543,469.40 and 429,613.43

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Solution

The fourth proportional to 1,028,979, 1,543,469.40 and 429,613.43 is: 644,420.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,979 : 1,543,469.40 = 429,613.43 : x
  2. Step 2: Convert to fraction form
    1,028,979/1,543,469.40 = 429,613.43/x
  3. Step 3: Cross multiply
    1,028,979x = 1,543,469.40 × 429,613.43
  4. Step 4: Simplify right side
    1,028,979x = 663,095,175,316.70
  5. Step 5: Solve for x
    x = 663,095,175,316.70/1,028,979
  6. Step 6: Final answer
    x = 644,420.51

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Double scale
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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.