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Finding the Fourth Proportional to 716,457.56, 988,675.52 and 394,159.38

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Solution

The fourth proportional to 716,457.56, 988,675.52 and 394,159.38 is: 543,920.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,457.56 : 988,675.52 = 394,159.38 : x
  2. Step 2: Convert to fraction form
    716,457.56/988,675.52 = 394,159.38/x
  3. Step 3: Cross multiply
    716,457.56x = 988,675.52 × 394,159.38
  4. Step 4: Simplify right side
    716,457.56x = 389,695,729,984.38
  5. Step 5: Solve for x
    x = 389,695,729,984.38/716,457.56
  6. Step 6: Final answer
    x = 543,920.19

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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.