Home / 678,328.60-1,017,636.82-257,595.16

Finding the Fourth Proportional to 678,328.60, 1,017,636.82 and 257,595.16

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Solution

The fourth proportional to 678,328.60, 1,017,636.82 and 257,595.16 is: 386,447.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,328.60 : 1,017,636.82 = 257,595.16 : x
  2. Step 2: Convert to fraction form
    678,328.60/1,017,636.82 = 257,595.16/x
  3. Step 3: Cross multiply
    678,328.60x = 1,017,636.82 × 257,595.16
  4. Step 4: Simplify right side
    678,328.60x = 262,138,319,469.79
  5. Step 5: Solve for x
    x = 262,138,319,469.79/678,328.60
  6. Step 6: Final answer
    x = 386,447.39

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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.