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Finding the Fourth Proportional to 586,629.95, 809,549.31 and 318,357.95

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Solution

The fourth proportional to 586,629.95, 809,549.31 and 318,357.95 is: 439,333.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,629.95 : 809,549.31 = 318,357.95 : x
  2. Step 2: Convert to fraction form
    586,629.95/809,549.31 = 318,357.95/x
  3. Step 3: Cross multiply
    586,629.95x = 809,549.31 × 318,357.95
  4. Step 4: Simplify right side
    586,629.95x = 257,726,454,707.77
  5. Step 5: Solve for x
    x = 257,726,454,707.77/586,629.95
  6. Step 6: Final answer
    x = 439,333.96

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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.