Home / 1,225,179.34-1,690,499.73-715,783.30

Finding the Fourth Proportional to 1,225,179.34, 1,690,499.73 and 715,783.30

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Solution

The fourth proportional to 1,225,179.34, 1,690,499.73 and 715,783.30 is: 987,636.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,179.34 : 1,690,499.73 = 715,783.30 : x
  2. Step 2: Convert to fraction form
    1,225,179.34/1,690,499.73 = 715,783.30/x
  3. Step 3: Cross multiply
    1,225,179.34x = 1,690,499.73 × 715,783.30
  4. Step 4: Simplify right side
    1,225,179.34x = 1,210,031,474,817.45
  5. Step 5: Solve for x
    x = 1,210,031,474,817.45/1,225,179.34
  6. Step 6: Final answer
    x = 987,636.20

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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.