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Finding the Fourth Proportional to 446,645.80, 668,802.30 and 288,015.40

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Solution

The fourth proportional to 446,645.80, 668,802.30 and 288,015.40 is: 431,270.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,645.80 : 668,802.30 = 288,015.40 : x
  2. Step 2: Convert to fraction form
    446,645.80/668,802.30 = 288,015.40/x
  3. Step 3: Cross multiply
    446,645.80x = 668,802.30 × 288,015.40
  4. Step 4: Simplify right side
    446,645.80x = 192,625,361,955.42
  5. Step 5: Solve for x
    x = 192,625,361,955.42/446,645.80
  6. Step 6: Final answer
    x = 431,270.96

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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.