Home / 432,476.20-648,131.10-289,916.20

Finding the Fourth Proportional to 432,476.20, 648,131.10 and 289,916.20

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Solution

The fourth proportional to 432,476.20, 648,131.10 and 289,916.20 is: 434,483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,476.20 : 648,131.10 = 289,916.20 : x
  2. Step 2: Convert to fraction form
    432,476.20/648,131.10 = 289,916.20/x
  3. Step 3: Cross multiply
    432,476.20x = 648,131.10 × 289,916.20
  4. Step 4: Simplify right side
    432,476.20x = 187,903,705,613.82
  5. Step 5: Solve for x
    x = 187,903,705,613.82/432,476.20
  6. Step 6: Final answer
    x = 434,483.34

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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.