Home / 661,506.37-991,010.93-390,826.85

Finding the Fourth Proportional to 661,506.37, 991,010.93 and 390,826.85

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Solution

The fourth proportional to 661,506.37, 991,010.93 and 390,826.85 is: 585,502.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,506.37 : 991,010.93 = 390,826.85 : x
  2. Step 2: Convert to fraction form
    661,506.37/991,010.93 = 390,826.85/x
  3. Step 3: Cross multiply
    661,506.37x = 991,010.93 × 390,826.85
  4. Step 4: Simplify right side
    661,506.37x = 387,313,673,178.28
  5. Step 5: Solve for x
    x = 387,313,673,178.28/661,506.37
  6. Step 6: Final answer
    x = 585,502.56

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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.