Home / 1,225,179.84-1,690,500.42-715,783.80

Finding the Fourth Proportional to 1,225,179.84, 1,690,500.42 and 715,783.80

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Solution

The fourth proportional to 1,225,179.84, 1,690,500.42 and 715,783.80 is: 987,636.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,179.84 : 1,690,500.42 = 715,783.80 : x
  2. Step 2: Convert to fraction form
    1,225,179.84/1,690,500.42 = 715,783.80/x
  3. Step 3: Cross multiply
    1,225,179.84x = 1,690,500.42 × 715,783.80
  4. Step 4: Simplify right side
    1,225,179.84x = 1,210,032,815,176.53
  5. Step 5: Solve for x
    x = 1,210,032,815,176.53/1,225,179.84
  6. Step 6: Final answer
    x = 987,636.89

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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.