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Finding the Fourth Proportional to 642,735.80, 964,103.70 and 476,847.80

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Solution

The fourth proportional to 642,735.80, 964,103.70 and 476,847.80 is: 715,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,735.80 : 964,103.70 = 476,847.80 : x
  2. Step 2: Convert to fraction form
    642,735.80/964,103.70 = 476,847.80/x
  3. Step 3: Cross multiply
    642,735.80x = 964,103.70 × 476,847.80
  4. Step 4: Simplify right side
    642,735.80x = 459,730,728,316.86
  5. Step 5: Solve for x
    x = 459,730,728,316.86/642,735.80
  6. Step 6: Final answer
    x = 715,271.70

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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.