Home / 1,217,622.81-1,680,249.40-673,731.25

Finding the Fourth Proportional to 1,217,622.81, 1,680,249.40 and 673,731.25

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Solution

The fourth proportional to 1,217,622.81, 1,680,249.40 and 673,731.25 is: 929,710.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,622.81 : 1,680,249.40 = 673,731.25 : x
  2. Step 2: Convert to fraction form
    1,217,622.81/1,680,249.40 = 673,731.25/x
  3. Step 3: Cross multiply
    1,217,622.81x = 1,680,249.40 × 673,731.25
  4. Step 4: Simplify right side
    1,217,622.81x = 1,132,036,520,172.50
  5. Step 5: Solve for x
    x = 1,132,036,520,172.50/1,217,622.81
  6. Step 6: Final answer
    x = 929,710.34

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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.