Home / 661,530.93-991,044.32-390,849.59

Finding the Fourth Proportional to 661,530.93, 991,044.32 and 390,849.59

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Solution

The fourth proportional to 661,530.93, 991,044.32 and 390,849.59 is: 585,534.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,530.93 : 991,044.32 = 390,849.59 : x
  2. Step 2: Convert to fraction form
    661,530.93/991,044.32 = 390,849.59/x
  3. Step 3: Cross multiply
    661,530.93x = 991,044.32 × 390,849.59
  4. Step 4: Simplify right side
    661,530.93x = 387,349,259,234.36
  5. Step 5: Solve for x
    x = 387,349,259,234.36/661,530.93
  6. Step 6: Final answer
    x = 585,534.62

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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.