Home / 665,839.32-918,599.58-424,078.44

Finding the Fourth Proportional to 665,839.32, 918,599.58 and 424,078.44

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Solution

The fourth proportional to 665,839.32, 918,599.58 and 424,078.44 is: 585,063.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,839.32 : 918,599.58 = 424,078.44 : x
  2. Step 2: Convert to fraction form
    665,839.32/918,599.58 = 424,078.44/x
  3. Step 3: Cross multiply
    665,839.32x = 918,599.58 × 424,078.44
  4. Step 4: Simplify right side
    665,839.32x = 389,558,276,871.06
  5. Step 5: Solve for x
    x = 389,558,276,871.06/665,839.32
  6. Step 6: Final answer
    x = 585,063.49

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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.