Home / 1,145,127.40-1,716,222.30-639,687.40

Finding the Fourth Proportional to 1,145,127.40, 1,716,222.30 and 639,687.40

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Solution

The fourth proportional to 1,145,127.40, 1,716,222.30 and 639,687.40 is: 958,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,127.40 : 1,716,222.30 = 639,687.40 : x
  2. Step 2: Convert to fraction form
    1,145,127.40/1,716,222.30 = 639,687.40/x
  3. Step 3: Cross multiply
    1,145,127.40x = 1,716,222.30 × 639,687.40
  4. Step 4: Simplify right side
    1,145,127.40x = 1,097,845,780,909.02
  5. Step 5: Solve for x
    x = 1,097,845,780,909.02/1,145,127.40
  6. Step 6: Final answer
    x = 958,710.60

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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.