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Finding the Fourth Proportional to 586,597.80, 809,504.88 and 318,325.80

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Solution

The fourth proportional to 586,597.80, 809,504.88 and 318,325.80 is: 439,289.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,597.80 : 809,504.88 = 318,325.80 : x
  2. Step 2: Convert to fraction form
    586,597.80/809,504.88 = 318,325.80/x
  3. Step 3: Cross multiply
    586,597.80x = 809,504.88 × 318,325.80
  4. Step 4: Simplify right side
    586,597.80x = 257,686,288,529.90
  5. Step 5: Solve for x
    x = 257,686,288,529.90/586,597.80
  6. Step 6: Final answer
    x = 439,289.56

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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.