Home / 807,415.32-1,114,179.66-485,139

Finding the Fourth Proportional to 807,415.32, 1,114,179.66 and 485,139

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Solution

The fourth proportional to 807,415.32, 1,114,179.66 and 485,139 is: 669,459.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,415.32 : 1,114,179.66 = 485,139 : x
  2. Step 2: Convert to fraction form
    807,415.32/1,114,179.66 = 485,139/x
  3. Step 3: Cross multiply
    807,415.32x = 1,114,179.66 × 485,139
  4. Step 4: Simplify right side
    807,415.32x = 540,532,006,072.74
  5. Step 5: Solve for x
    x = 540,532,006,072.74/807,415.32
  6. Step 6: Final answer
    x = 669,459.69

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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.