Home / 857,090.90-1,182,377.81-512,857.51

Finding the Fourth Proportional to 857,090.90, 1,182,377.81 and 512,857.51

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Solution

The fourth proportional to 857,090.90, 1,182,377.81 and 512,857.51 is: 707,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,090.90 : 1,182,377.81 = 512,857.51 : x
  2. Step 2: Convert to fraction form
    857,090.90/1,182,377.81 = 512,857.51/x
  3. Step 3: Cross multiply
    857,090.90x = 1,182,377.81 × 512,857.51
  4. Step 4: Simplify right side
    857,090.90x = 606,391,337,842.05
  5. Step 5: Solve for x
    x = 606,391,337,842.05/857,090.90
  6. Step 6: Final answer
    x = 707,499.45

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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.