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Finding the Fourth Proportional to 586,544.74, 809,428.89 and 318,272.74

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Solution

The fourth proportional to 586,544.74, 809,428.89 and 318,272.74 is: 439,214.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,544.74 : 809,428.89 = 318,272.74 : x
  2. Step 2: Convert to fraction form
    586,544.74/809,428.89 = 318,272.74/x
  3. Step 3: Cross multiply
    586,544.74x = 809,428.89 × 318,272.74
  4. Step 4: Simplify right side
    586,544.74x = 257,619,150,655.46
  5. Step 5: Solve for x
    x = 257,619,150,655.46/586,544.74
  6. Step 6: Final answer
    x = 439,214.83

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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.