Home / 811,282.32-1,215,060.18-405,228.18

Finding the Fourth Proportional to 811,282.32, 1,215,060.18 and 405,228.18

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Solution

The fourth proportional to 811,282.32, 1,215,060.18 and 405,228.18 is: 606,911.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,282.32 : 1,215,060.18 = 405,228.18 : x
  2. Step 2: Convert to fraction form
    811,282.32/1,215,060.18 = 405,228.18/x
  3. Step 3: Cross multiply
    811,282.32x = 1,215,060.18 × 405,228.18
  4. Step 4: Simplify right side
    811,282.32x = 492,376,625,331.87
  5. Step 5: Solve for x
    x = 492,376,625,331.87/811,282.32
  6. Step 6: Final answer
    x = 606,911.57

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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.