Home / 432,002.80-648,004.20-290,285.20

Finding the Fourth Proportional to 432,002.80, 648,004.20 and 290,285.20

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Solution

The fourth proportional to 432,002.80, 648,004.20 and 290,285.20 is: 435,427.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,002.80 : 648,004.20 = 290,285.20 : x
  2. Step 2: Convert to fraction form
    432,002.80/648,004.20 = 290,285.20/x
  3. Step 3: Cross multiply
    432,002.80x = 648,004.20 × 290,285.20
  4. Step 4: Simplify right side
    432,002.80x = 188,106,028,797.84
  5. Step 5: Solve for x
    x = 188,106,028,797.84/432,002.80
  6. Step 6: Final answer
    x = 435,427.80

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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.