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Finding the Fourth Proportional to 647,813.20, 970,407.60 and 367,002.40

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Solution

The fourth proportional to 647,813.20, 970,407.60 and 367,002.40 is: 549,760.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,813.20 : 970,407.60 = 367,002.40 : x
  2. Step 2: Convert to fraction form
    647,813.20/970,407.60 = 367,002.40/x
  3. Step 3: Cross multiply
    647,813.20x = 970,407.60 × 367,002.40
  4. Step 4: Simplify right side
    647,813.20x = 356,141,918,178.24
  5. Step 5: Solve for x
    x = 356,141,918,178.24/647,813.20
  6. Step 6: Final answer
    x = 549,760.21

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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.