Home / 678,083.60-1,017,455.76-278,844.32

Finding the Fourth Proportional to 678,083.60, 1,017,455.76 and 278,844.32

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Solution

The fourth proportional to 678,083.60, 1,017,455.76 and 278,844.32 is: 418,402.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,083.60 : 1,017,455.76 = 278,844.32 : x
  2. Step 2: Convert to fraction form
    678,083.60/1,017,455.76 = 278,844.32/x
  3. Step 3: Cross multiply
    678,083.60x = 1,017,455.76 × 278,844.32
  4. Step 4: Simplify right side
    678,083.60x = 283,711,759,527.28
  5. Step 5: Solve for x
    x = 283,711,759,527.28/678,083.60
  6. Step 6: Final answer
    x = 418,402.33

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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.