Home / 918,568.32-1,377,842.72-287,487.60

Finding the Fourth Proportional to 918,568.32, 1,377,842.72 and 287,487.60

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Solution

The fourth proportional to 918,568.32, 1,377,842.72 and 287,487.60 is: 431,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,568.32 : 1,377,842.72 = 287,487.60 : x
  2. Step 2: Convert to fraction form
    918,568.32/1,377,842.72 = 287,487.60/x
  3. Step 3: Cross multiply
    918,568.32x = 1,377,842.72 × 287,487.60
  4. Step 4: Simplify right side
    918,568.32x = 396,112,696,750.27
  5. Step 5: Solve for x
    x = 396,112,696,750.27/918,568.32
  6. Step 6: Final answer
    x = 431,228.35

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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.