Home / 1,210,714.11-1,670,796.78-666,851.87

Finding the Fourth Proportional to 1,210,714.11, 1,670,796.78 and 666,851.87

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Solution

The fourth proportional to 1,210,714.11, 1,670,796.78 and 666,851.87 is: 920,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,714.11 : 1,670,796.78 = 666,851.87 : x
  2. Step 2: Convert to fraction form
    1,210,714.11/1,670,796.78 = 666,851.87/x
  3. Step 3: Cross multiply
    1,210,714.11x = 1,670,796.78 × 666,851.87
  4. Step 4: Simplify right side
    1,210,714.11x = 1,114,173,948,778.99
  5. Step 5: Solve for x
    x = 1,114,173,948,778.99/1,210,714.11
  6. Step 6: Final answer
    x = 920,261.80

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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.