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Finding the Fourth Proportional to 647,603.60, 971,405.40 and 529,408.40

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Solution

The fourth proportional to 647,603.60, 971,405.40 and 529,408.40 is: 794,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,603.60 : 971,405.40 = 529,408.40 : x
  2. Step 2: Convert to fraction form
    647,603.60/971,405.40 = 529,408.40/x
  3. Step 3: Cross multiply
    647,603.60x = 971,405.40 × 529,408.40
  4. Step 4: Simplify right side
    647,603.60x = 514,270,178,565.36
  5. Step 5: Solve for x
    x = 514,270,178,565.36/647,603.60
  6. Step 6: Final answer
    x = 794,112.60

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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.