Home / 811,419.88-1,216,643.80-385,061.80

Finding the Fourth Proportional to 811,419.88, 1,216,643.80 and 385,061.80

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Solution

The fourth proportional to 811,419.88, 1,216,643.80 and 385,061.80 is: 577,362.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,419.88 : 1,216,643.80 = 385,061.80 : x
  2. Step 2: Convert to fraction form
    811,419.88/1,216,643.80 = 385,061.80/x
  3. Step 3: Cross multiply
    811,419.88x = 1,216,643.80 × 385,061.80
  4. Step 4: Simplify right side
    811,419.88x = 468,483,051,586.84
  5. Step 5: Solve for x
    x = 468,483,051,586.84/811,419.88
  6. Step 6: Final answer
    x = 577,362.06

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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.