Home / 807,382.10-1,210,781.55-407,890.10

Finding the Fourth Proportional to 807,382.10, 1,210,781.55 and 407,890.10

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Solution

The fourth proportional to 807,382.10, 1,210,781.55 and 407,890.10 is: 611,687.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,382.10 : 1,210,781.55 = 407,890.10 : x
  2. Step 2: Convert to fraction form
    807,382.10/1,210,781.55 = 407,890.10/x
  3. Step 3: Cross multiply
    807,382.10x = 1,210,781.55 × 407,890.10
  4. Step 4: Simplify right side
    807,382.10x = 493,865,807,507.66
  5. Step 5: Solve for x
    x = 493,865,807,507.66/807,382.10
  6. Step 6: Final answer
    x = 611,687.83

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1.5x scale

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.