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Finding the Fourth Proportional to 440,919.25, 608,598.06 and 287,980.82

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Solution

The fourth proportional to 440,919.25, 608,598.06 and 287,980.82 is: 397,498.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,919.25 : 608,598.06 = 287,980.82 : x
  2. Step 2: Convert to fraction form
    440,919.25/608,598.06 = 287,980.82/x
  3. Step 3: Cross multiply
    440,919.25x = 608,598.06 × 287,980.82
  4. Step 4: Simplify right side
    440,919.25x = 175,264,566,528.53
  5. Step 5: Solve for x
    x = 175,264,566,528.53/440,919.25
  6. Step 6: Final answer
    x = 397,498.11

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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.