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Finding the Fourth Proportional to 768,509.12, 1,150,401.48 and 655,135.04

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Solution

The fourth proportional to 768,509.12, 1,150,401.48 and 655,135.04 is: 980,688.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,509.12 : 1,150,401.48 = 655,135.04 : x
  2. Step 2: Convert to fraction form
    768,509.12/1,150,401.48 = 655,135.04/x
  3. Step 3: Cross multiply
    768,509.12x = 1,150,401.48 × 655,135.04
  4. Step 4: Simplify right side
    768,509.12x = 753,668,319,615.86
  5. Step 5: Solve for x
    x = 753,668,319,615.86/768,509.12
  6. Step 6: Final answer
    x = 980,688.84

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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.