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Finding the Fourth Proportional to 647,687.60, 971,531.40 and 529,492.40

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Solution

The fourth proportional to 647,687.60, 971,531.40 and 529,492.40 is: 794,238.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,687.60 : 971,531.40 = 529,492.40 : x
  2. Step 2: Convert to fraction form
    647,687.60/971,531.40 = 529,492.40/x
  3. Step 3: Cross multiply
    647,687.60x = 971,531.40 × 529,492.40
  4. Step 4: Simplify right side
    647,687.60x = 514,418,492,661.36
  5. Step 5: Solve for x
    x = 514,418,492,661.36/647,687.60
  6. Step 6: Final answer
    x = 794,238.60

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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.