Home / 1,187,997.40-1,781,996.10-429,837.40

Finding the Fourth Proportional to 1,187,997.40, 1,781,996.10 and 429,837.40

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Solution

The fourth proportional to 1,187,997.40, 1,781,996.10 and 429,837.40 is: 644,756.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,997.40 : 1,781,996.10 = 429,837.40 : x
  2. Step 2: Convert to fraction form
    1,187,997.40/1,781,996.10 = 429,837.40/x
  3. Step 3: Cross multiply
    1,187,997.40x = 1,781,996.10 × 429,837.40
  4. Step 4: Simplify right side
    1,187,997.40x = 765,968,570,434.14
  5. Step 5: Solve for x
    x = 765,968,570,434.14/1,187,997.40
  6. Step 6: Final answer
    x = 644,756.10

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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.