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Finding the Fourth Proportional to 672,221.40, 941,809.80 and 672,221.40

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Solution

The fourth proportional to 672,221.40, 941,809.80 and 672,221.40 is: 941,809.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,221.40 : 941,809.80 = 672,221.40 : x
  2. Step 2: Convert to fraction form
    672,221.40/941,809.80 = 672,221.40/x
  3. Step 3: Cross multiply
    672,221.40x = 941,809.80 × 672,221.40
  4. Step 4: Simplify right side
    672,221.40x = 633,104,702,289.72
  5. Step 5: Solve for x
    x = 633,104,702,289.72/672,221.40
  6. Step 6: Final answer
    x = 941,809.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.