Home / 642,880.32-887,202.72-427,675.20

Finding the Fourth Proportional to 642,880.32, 887,202.72 and 427,675.20

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Solution

The fourth proportional to 642,880.32, 887,202.72 and 427,675.20 is: 590,210.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,880.32 : 887,202.72 = 427,675.20 : x
  2. Step 2: Convert to fraction form
    642,880.32/887,202.72 = 427,675.20/x
  3. Step 3: Cross multiply
    642,880.32x = 887,202.72 × 427,675.20
  4. Step 4: Simplify right side
    642,880.32x = 379,434,600,716.54
  5. Step 5: Solve for x
    x = 379,434,600,716.54/642,880.32
  6. Step 6: Final answer
    x = 590,210.32

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Double scale
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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.