Home / 1,286,887.64-1,930,346.32-388,337.16

Finding the Fourth Proportional to 1,286,887.64, 1,930,346.32 and 388,337.16

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Solution

The fourth proportional to 1,286,887.64, 1,930,346.32 and 388,337.16 is: 582,510.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,887.64 : 1,930,346.32 = 388,337.16 : x
  2. Step 2: Convert to fraction form
    1,286,887.64/1,930,346.32 = 388,337.16/x
  3. Step 3: Cross multiply
    1,286,887.64x = 1,930,346.32 × 388,337.16
  4. Step 4: Simplify right side
    1,286,887.64x = 749,625,207,725.25
  5. Step 5: Solve for x
    x = 749,625,207,725.25/1,286,887.64
  6. Step 6: Final answer
    x = 582,510.22

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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.