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Finding the Fourth Proportional to 492,388.80, 679,501.08 and 277,509.84

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Solution

The fourth proportional to 492,388.80, 679,501.08 and 277,509.84 is: 382,966.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,388.80 : 679,501.08 = 277,509.84 : x
  2. Step 2: Convert to fraction form
    492,388.80/679,501.08 = 277,509.84/x
  3. Step 3: Cross multiply
    492,388.80x = 679,501.08 × 277,509.84
  4. Step 4: Simplify right side
    492,388.80x = 188,568,235,990.63
  5. Step 5: Solve for x
    x = 188,568,235,990.63/492,388.80
  6. Step 6: Final answer
    x = 382,966.14

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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.