Home / 1,210,060.72-1,669,820.40-666,090.28

Finding the Fourth Proportional to 1,210,060.72, 1,669,820.40 and 666,090.28

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Solution

The fourth proportional to 1,210,060.72, 1,669,820.40 and 666,090.28 is: 919,169.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,060.72 : 1,669,820.40 = 666,090.28 : x
  2. Step 2: Convert to fraction form
    1,210,060.72/1,669,820.40 = 666,090.28/x
  3. Step 3: Cross multiply
    1,210,060.72x = 1,669,820.40 × 666,090.28
  4. Step 4: Simplify right side
    1,210,060.72x = 1,112,251,137,785.71
  5. Step 5: Solve for x
    x = 1,112,251,137,785.71/1,210,060.72
  6. Step 6: Final answer
    x = 919,169.69

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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.