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Finding the Fourth Proportional to 493,641.12, 740,150.64 and 418,787.40

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Solution

The fourth proportional to 493,641.12, 740,150.64 and 418,787.40 is: 627,917.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,641.12 : 740,150.64 = 418,787.40 : x
  2. Step 2: Convert to fraction form
    493,641.12/740,150.64 = 418,787.40/x
  3. Step 3: Cross multiply
    493,641.12x = 740,150.64 × 418,787.40
  4. Step 4: Simplify right side
    493,641.12x = 309,965,762,133.94
  5. Step 5: Solve for x
    x = 309,965,762,133.94/493,641.12
  6. Step 6: Final answer
    x = 627,917.22

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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.