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Finding the Fourth Proportional to 586,585.30, 809,487.72 and 318,313.30

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Solution

The fourth proportional to 586,585.30, 809,487.72 and 318,313.30 is: 439,272.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,585.30 : 809,487.72 = 318,313.30 : x
  2. Step 2: Convert to fraction form
    586,585.30/809,487.72 = 318,313.30/x
  3. Step 3: Cross multiply
    586,585.30x = 809,487.72 × 318,313.30
  4. Step 4: Simplify right side
    586,585.30x = 257,670,707,462.68
  5. Step 5: Solve for x
    x = 257,670,707,462.68/586,585.30
  6. Step 6: Final answer
    x = 439,272.36

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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.