Home / 789,955.61-1,090,111.78-450,533.21

Finding the Fourth Proportional to 789,955.61, 1,090,111.78 and 450,533.21

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Solution

The fourth proportional to 789,955.61, 1,090,111.78 and 450,533.21 is: 621,720.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,955.61 : 1,090,111.78 = 450,533.21 : x
  2. Step 2: Convert to fraction form
    789,955.61/1,090,111.78 = 450,533.21/x
  3. Step 3: Cross multiply
    789,955.61x = 1,090,111.78 × 450,533.21
  4. Step 4: Simplify right side
    789,955.61x = 491,131,559,502.21
  5. Step 5: Solve for x
    x = 491,131,559,502.21/789,955.61
  6. Step 6: Final answer
    x = 621,720.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.