Home / 806,640.13-1,210,707.89-407,561.38

Finding the Fourth Proportional to 806,640.13, 1,210,707.89 and 407,561.38

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Solution

The fourth proportional to 806,640.13, 1,210,707.89 and 407,561.38 is: 611,719.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,640.13 : 1,210,707.89 = 407,561.38 : x
  2. Step 2: Convert to fraction form
    806,640.13/1,210,707.89 = 407,561.38/x
  3. Step 3: Cross multiply
    806,640.13x = 1,210,707.89 × 407,561.38
  4. Step 4: Simplify right side
    806,640.13x = 493,437,778,425.29
  5. Step 5: Solve for x
    x = 493,437,778,425.29/806,640.13
  6. Step 6: Final answer
    x = 611,719.85

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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.