Home / 807,979.40-1,210,511.10-386,325.80

Finding the Fourth Proportional to 807,979.40, 1,210,511.10 and 386,325.80

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Solution

The fourth proportional to 807,979.40, 1,210,511.10 and 386,325.80 is: 578,791.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,979.40 : 1,210,511.10 = 386,325.80 : x
  2. Step 2: Convert to fraction form
    807,979.40/1,210,511.10 = 386,325.80/x
  3. Step 3: Cross multiply
    807,979.40x = 1,210,511.10 × 386,325.80
  4. Step 4: Simplify right side
    807,979.40x = 467,651,669,116.38
  5. Step 5: Solve for x
    x = 467,651,669,116.38/807,979.40
  6. Step 6: Final answer
    x = 578,791.57

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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.