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Finding the Fourth Proportional to 570,609.97, 787,436.10 and 308,964.04

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Solution

The fourth proportional to 570,609.97, 787,436.10 and 308,964.04 is: 426,367.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,609.97 : 787,436.10 = 308,964.04 : x
  2. Step 2: Convert to fraction form
    570,609.97/787,436.10 = 308,964.04/x
  3. Step 3: Cross multiply
    570,609.97x = 787,436.10 × 308,964.04
  4. Step 4: Simplify right side
    570,609.97x = 243,289,436,729.25
  5. Step 5: Solve for x
    x = 243,289,436,729.25/570,609.97
  6. Step 6: Final answer
    x = 426,367.31

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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.