Home / 432,002.80-648,004.20-306,031.60

Finding the Fourth Proportional to 432,002.80, 648,004.20 and 306,031.60

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Solution

The fourth proportional to 432,002.80, 648,004.20 and 306,031.60 is: 459,047.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,002.80 : 648,004.20 = 306,031.60 : x
  2. Step 2: Convert to fraction form
    432,002.80/648,004.20 = 306,031.60/x
  3. Step 3: Cross multiply
    432,002.80x = 648,004.20 × 306,031.60
  4. Step 4: Simplify right side
    432,002.80x = 198,309,762,132.72
  5. Step 5: Solve for x
    x = 198,309,762,132.72/432,002.80
  6. Step 6: Final answer
    x = 459,047.40

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1.5x scale

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.