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Finding the Fourth Proportional to 647,530.80, 970,875.72 and 310,563.60

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Solution

The fourth proportional to 647,530.80, 970,875.72 and 310,563.60 is: 465,643.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,530.80 : 970,875.72 = 310,563.60 : x
  2. Step 2: Convert to fraction form
    647,530.80/970,875.72 = 310,563.60/x
  3. Step 3: Cross multiply
    647,530.80x = 970,875.72 × 310,563.60
  4. Step 4: Simplify right side
    647,530.80x = 301,518,658,755.79
  5. Step 5: Solve for x
    x = 301,518,658,755.79/647,530.80
  6. Step 6: Final answer
    x = 465,643.73

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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.