Home / 1,225,179.72-1,690,500.25-715,783.68

Finding the Fourth Proportional to 1,225,179.72, 1,690,500.25 and 715,783.68

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Solution

The fourth proportional to 1,225,179.72, 1,690,500.25 and 715,783.68 is: 987,636.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,179.72 : 1,690,500.25 = 715,783.68 : x
  2. Step 2: Convert to fraction form
    1,225,179.72/1,690,500.25 = 715,783.68/x
  3. Step 3: Cross multiply
    1,225,179.72x = 1,690,500.25 × 715,783.68
  4. Step 4: Simplify right side
    1,225,179.72x = 1,210,032,488,196.46
  5. Step 5: Solve for x
    x = 1,210,032,488,196.46/1,225,179.72
  6. Step 6: Final answer
    x = 987,636.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.