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Finding the Fourth Proportional to 647,631.19, 971,528.17 and 347,699.51

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Solution

The fourth proportional to 647,631.19, 971,528.17 and 347,699.51 is: 521,592.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,631.19 : 971,528.17 = 347,699.51 : x
  2. Step 2: Convert to fraction form
    647,631.19/971,528.17 = 347,699.51/x
  3. Step 3: Cross multiply
    647,631.19x = 971,528.17 × 347,699.51
  4. Step 4: Simplify right side
    647,631.19x = 337,799,868,660.20
  5. Step 5: Solve for x
    x = 337,799,868,660.20/647,631.19
  6. Step 6: Final answer
    x = 521,592.96

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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.