Home / 1,238,605.16-1,857,461.90-428,769.60

Finding the Fourth Proportional to 1,238,605.16, 1,857,461.90 and 428,769.60

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Solution

The fourth proportional to 1,238,605.16, 1,857,461.90 and 428,769.60 is: 643,000.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,605.16 : 1,857,461.90 = 428,769.60 : x
  2. Step 2: Convert to fraction form
    1,238,605.16/1,857,461.90 = 428,769.60/x
  3. Step 3: Cross multiply
    1,238,605.16x = 1,857,461.90 × 428,769.60
  4. Step 4: Simplify right side
    1,238,605.16x = 796,423,195,878.24
  5. Step 5: Solve for x
    x = 796,423,195,878.24/1,238,605.16
  6. Step 6: Final answer
    x = 643,000.06

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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.