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Finding the Fourth Proportional to 492,504.80, 679,762.29 and 311,101.34

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Solution

The fourth proportional to 492,504.80, 679,762.29 and 311,101.34 is: 429,386.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,504.80 : 679,762.29 = 311,101.34 : x
  2. Step 2: Convert to fraction form
    492,504.80/679,762.29 = 311,101.34/x
  3. Step 3: Cross multiply
    492,504.80x = 679,762.29 × 311,101.34
  4. Step 4: Simplify right side
    492,504.80x = 211,474,959,300.47
  5. Step 5: Solve for x
    x = 211,474,959,300.47/492,504.80
  6. Step 6: Final answer
    x = 429,386.60

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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.