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Finding the Fourth Proportional to 432,124.20, 647,408.70 and 369,916.20

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Solution

The fourth proportional to 432,124.20, 647,408.70 and 369,916.20 is: 554,208.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,124.20 : 647,408.70 = 369,916.20 : x
  2. Step 2: Convert to fraction form
    432,124.20/647,408.70 = 369,916.20/x
  3. Step 3: Cross multiply
    432,124.20x = 647,408.70 × 369,916.20
  4. Step 4: Simplify right side
    432,124.20x = 239,486,966,150.94
  5. Step 5: Solve for x
    x = 239,486,966,150.94/432,124.20
  6. Step 6: Final answer
    x = 554,208.64

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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.