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Finding the Fourth Proportional to 647,464.80, 971,477.40 and 347,595.52

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Solution

The fourth proportional to 647,464.80, 971,477.40 and 347,595.52 is: 521,543.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,464.80 : 971,477.40 = 347,595.52 : x
  2. Step 2: Convert to fraction form
    647,464.80/971,477.40 = 347,595.52/x
  3. Step 3: Cross multiply
    647,464.80x = 971,477.40 × 347,595.52
  4. Step 4: Simplify right side
    647,464.80x = 337,681,192,021.25
  5. Step 5: Solve for x
    x = 337,681,192,021.25/647,464.80
  6. Step 6: Final answer
    x = 521,543.71

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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.