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Finding the Fourth Proportional to 648,215.60, 971,497.20 and 363,905.60

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Solution

The fourth proportional to 648,215.60, 971,497.20 and 363,905.60 is: 545,394.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,215.60 : 971,497.20 = 363,905.60 : x
  2. Step 2: Convert to fraction form
    648,215.60/971,497.20 = 363,905.60/x
  3. Step 3: Cross multiply
    648,215.60x = 971,497.20 × 363,905.60
  4. Step 4: Simplify right side
    648,215.60x = 353,533,271,464.32
  5. Step 5: Solve for x
    x = 353,533,271,464.32/648,215.60
  6. Step 6: Final answer
    x = 545,394.57

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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.