Home / 1,145,137.40-1,716,237.30-639,697.40

Finding the Fourth Proportional to 1,145,137.40, 1,716,237.30 and 639,697.40

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Solution

The fourth proportional to 1,145,137.40, 1,716,237.30 and 639,697.40 is: 958,725.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,137.40 : 1,716,237.30 = 639,697.40 : x
  2. Step 2: Convert to fraction form
    1,145,137.40/1,716,237.30 = 639,697.40/x
  3. Step 3: Cross multiply
    1,145,137.40x = 1,716,237.30 × 639,697.40
  4. Step 4: Simplify right side
    1,145,137.40x = 1,097,872,538,593.02
  5. Step 5: Solve for x
    x = 1,097,872,538,593.02/1,145,137.40
  6. Step 6: Final answer
    x = 958,725.60

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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.