Home / 958,986.90-1,438,480.35-399,114.90

Finding the Fourth Proportional to 958,986.90, 1,438,480.35 and 399,114.90

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Solution

The fourth proportional to 958,986.90, 1,438,480.35 and 399,114.90 is: 598,672.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    958,986.90 : 1,438,480.35 = 399,114.90 : x
  2. Step 2: Convert to fraction form
    958,986.90/1,438,480.35 = 399,114.90/x
  3. Step 3: Cross multiply
    958,986.90x = 1,438,480.35 × 399,114.90
  4. Step 4: Simplify right side
    958,986.90x = 574,118,941,042.22
  5. Step 5: Solve for x
    x = 574,118,941,042.22/958,986.90
  6. Step 6: Final answer
    x = 598,672.35

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Double scale
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Similar ratio
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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.