Home / 1,225,179.81-1,690,500.33-715,783.77

Finding the Fourth Proportional to 1,225,179.81, 1,690,500.33 and 715,783.77

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Solution

The fourth proportional to 1,225,179.81, 1,690,500.33 and 715,783.77 is: 987,636.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,179.81 : 1,690,500.33 = 715,783.77 : x
  2. Step 2: Convert to fraction form
    1,225,179.81/1,690,500.33 = 715,783.77/x
  3. Step 3: Cross multiply
    1,225,179.81x = 1,690,500.33 × 715,783.77
  4. Step 4: Simplify right side
    1,225,179.81x = 1,210,032,699,393.64
  5. Step 5: Solve for x
    x = 1,210,032,699,393.64/1,225,179.81
  6. Step 6: Final answer
    x = 987,636.83

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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.