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Finding the Fourth Proportional to 647,429.70, 971,144.55 and 362,828.10

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Solution

The fourth proportional to 647,429.70, 971,144.55 and 362,828.10 is: 544,242.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,429.70 : 971,144.55 = 362,828.10 : x
  2. Step 2: Convert to fraction form
    647,429.70/971,144.55 = 362,828.10/x
  3. Step 3: Cross multiply
    647,429.70x = 971,144.55 × 362,828.10
  4. Step 4: Simplify right side
    647,429.70x = 352,358,531,901.86
  5. Step 5: Solve for x
    x = 352,358,531,901.86/647,429.70
  6. Step 6: Final answer
    x = 544,242.15

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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.