Home / 432,272.20-648,126.70-388,035.40

Finding the Fourth Proportional to 432,272.20, 648,126.70 and 388,035.40

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Solution

The fourth proportional to 432,272.20, 648,126.70 and 388,035.40 is: 581,800.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,272.20 : 648,126.70 = 388,035.40 : x
  2. Step 2: Convert to fraction form
    432,272.20/648,126.70 = 388,035.40/x
  3. Step 3: Cross multiply
    432,272.20x = 648,126.70 × 388,035.40
  4. Step 4: Simplify right side
    432,272.20x = 251,496,103,285.18
  5. Step 5: Solve for x
    x = 251,496,103,285.18/432,272.20
  6. Step 6: Final answer
    x = 581,800.32

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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.