Home / 958,999.40-1,438,499.10-399,127.40

Finding the Fourth Proportional to 958,999.40, 1,438,499.10 and 399,127.40

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Solution

The fourth proportional to 958,999.40, 1,438,499.10 and 399,127.40 is: 598,691.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    958,999.40 : 1,438,499.10 = 399,127.40 : x
  2. Step 2: Convert to fraction form
    958,999.40/1,438,499.10 = 399,127.40/x
  3. Step 3: Cross multiply
    958,999.40x = 1,438,499.10 × 399,127.40
  4. Step 4: Simplify right side
    958,999.40x = 574,144,405,685.34
  5. Step 5: Solve for x
    x = 574,144,405,685.34/958,999.40
  6. Step 6: Final answer
    x = 598,691.10

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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.