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Finding the Fourth Proportional to 586,618.56, 809,533.59 and 318,346.56

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Solution

The fourth proportional to 586,618.56, 809,533.59 and 318,346.56 is: 439,318.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,618.56 : 809,533.59 = 318,346.56 : x
  2. Step 2: Convert to fraction form
    586,618.56/809,533.59 = 318,346.56/x
  3. Step 3: Cross multiply
    586,618.56x = 809,533.59 × 318,346.56
  4. Step 4: Simplify right side
    586,618.56x = 257,712,233,580.95
  5. Step 5: Solve for x
    x = 257,712,233,580.95/586,618.56
  6. Step 6: Final answer
    x = 439,318.24

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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.