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Finding the Fourth Proportional to 607,187.80, 911,364.90 and 308,006.20

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Solution

The fourth proportional to 607,187.80, 911,364.90 and 308,006.20 is: 462,305.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,187.80 : 911,364.90 = 308,006.20 : x
  2. Step 2: Convert to fraction form
    607,187.80/911,364.90 = 308,006.20/x
  3. Step 3: Cross multiply
    607,187.80x = 911,364.90 × 308,006.20
  4. Step 4: Simplify right side
    607,187.80x = 280,706,039,662.38
  5. Step 5: Solve for x
    x = 280,706,039,662.38/607,187.80
  6. Step 6: Final answer
    x = 462,305.14

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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.