Home / 647,960.80-971,941.20-448,225.60

Finding the Fourth Proportional to 647,960.80, 971,941.20 and 448,225.60

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Solution

The fourth proportional to 647,960.80, 971,941.20 and 448,225.60 is: 672,338.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,960.80 : 971,941.20 = 448,225.60 : x
  2. Step 2: Convert to fraction form
    647,960.80/971,941.20 = 448,225.60/x
  3. Step 3: Cross multiply
    647,960.80x = 971,941.20 × 448,225.60
  4. Step 4: Simplify right side
    647,960.80x = 435,648,927,534.72
  5. Step 5: Solve for x
    x = 435,648,927,534.72/647,960.80
  6. Step 6: Final answer
    x = 672,338.40

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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.