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Finding the Fourth Proportional to 586,507.02, 809,379.18 and 318,235.02

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Solution

The fourth proportional to 586,507.02, 809,379.18 and 318,235.02 is: 439,164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,507.02 : 809,379.18 = 318,235.02 : x
  2. Step 2: Convert to fraction form
    586,507.02/809,379.18 = 318,235.02/x
  3. Step 3: Cross multiply
    586,507.02x = 809,379.18 × 318,235.02
  4. Step 4: Simplify right side
    586,507.02x = 257,572,799,534.88
  5. Step 5: Solve for x
    x = 257,572,799,534.88/586,507.02
  6. Step 6: Final answer
    x = 439,164.05

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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.