Home / 740,999.61-1,022,639.49-418,776.57

Finding the Fourth Proportional to 740,999.61, 1,022,639.49 and 418,776.57

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Solution

The fourth proportional to 740,999.61, 1,022,639.49 and 418,776.57 is: 577,945.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,999.61 : 1,022,639.49 = 418,776.57 : x
  2. Step 2: Convert to fraction form
    740,999.61/1,022,639.49 = 418,776.57/x
  3. Step 3: Cross multiply
    740,999.61x = 1,022,639.49 × 418,776.57
  4. Step 4: Simplify right side
    740,999.61x = 428,257,457,968.75
  5. Step 5: Solve for x
    x = 428,257,457,968.75/740,999.61
  6. Step 6: Final answer
    x = 577,945.59

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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.