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Finding the Fourth Proportional to 440,920.37, 608,599.61 and 287,981.94

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Solution

The fourth proportional to 440,920.37, 608,599.61 and 287,981.94 is: 397,499.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,920.37 : 608,599.61 = 287,981.94 : x
  2. Step 2: Convert to fraction form
    440,920.37/608,599.61 = 287,981.94/x
  3. Step 3: Cross multiply
    440,920.37x = 608,599.61 × 287,981.94
  4. Step 4: Simplify right side
    440,920.37x = 175,265,698,293.31
  5. Step 5: Solve for x
    x = 175,265,698,293.31/440,920.37
  6. Step 6: Final answer
    x = 397,499.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.