Home / 661,527.20-991,038.74-390,845.86

Finding the Fourth Proportional to 661,527.20, 991,038.74 and 390,845.86

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Solution

The fourth proportional to 661,527.20, 991,038.74 and 390,845.86 is: 585,529.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,527.20 : 991,038.74 = 390,845.86 : x
  2. Step 2: Convert to fraction form
    661,527.20/991,038.74 = 390,845.86/x
  3. Step 3: Cross multiply
    661,527.20x = 991,038.74 × 390,845.86
  4. Step 4: Simplify right side
    661,527.20x = 387,343,388,628.62
  5. Step 5: Solve for x
    x = 387,343,388,628.62/661,527.20
  6. Step 6: Final answer
    x = 585,529.04

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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.