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Finding the Fourth Proportional to 608,815.20, 840,066.84 and 382,300.32

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Solution

The fourth proportional to 608,815.20, 840,066.84 and 382,300.32 is: 527,512.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,815.20 : 840,066.84 = 382,300.32 : x
  2. Step 2: Convert to fraction form
    608,815.20/840,066.84 = 382,300.32/x
  3. Step 3: Cross multiply
    608,815.20x = 840,066.84 × 382,300.32
  4. Step 4: Simplify right side
    608,815.20x = 321,157,821,753.39
  5. Step 5: Solve for x
    x = 321,157,821,753.39/608,815.20
  6. Step 6: Final answer
    x = 527,512.82

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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.