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Finding the Fourth Proportional to 586,591.73, 809,496.57 and 318,319.73

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Solution

The fourth proportional to 586,591.73, 809,496.57 and 318,319.73 is: 439,281.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,591.73 : 809,496.57 = 318,319.73 : x
  2. Step 2: Convert to fraction form
    586,591.73/809,496.57 = 318,319.73/x
  3. Step 3: Cross multiply
    586,591.73x = 809,496.57 × 318,319.73
  4. Step 4: Simplify right side
    586,591.73x = 257,678,729,598.33
  5. Step 5: Solve for x
    x = 257,678,729,598.33/586,591.73
  6. Step 6: Final answer
    x = 439,281.22

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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.