Home / 691,110.77-1,035,321.12-390,682.58

Finding the Fourth Proportional to 691,110.77, 1,035,321.12 and 390,682.58

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Solution

The fourth proportional to 691,110.77, 1,035,321.12 and 390,682.58 is: 585,263.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,110.77 : 1,035,321.12 = 390,682.58 : x
  2. Step 2: Convert to fraction form
    691,110.77/1,035,321.12 = 390,682.58/x
  3. Step 3: Cross multiply
    691,110.77x = 1,035,321.12 × 390,682.58
  4. Step 4: Simplify right side
    691,110.77x = 404,481,921,113.48
  5. Step 5: Solve for x
    x = 404,481,921,113.48/691,110.77
  6. Step 6: Final answer
    x = 585,263.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.