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Finding the Fourth Proportional to 586,581.57, 809,482.56 and 318,309.57

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Solution

The fourth proportional to 586,581.57, 809,482.56 and 318,309.57 is: 439,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,581.57 : 809,482.56 = 318,309.57 : x
  2. Step 2: Convert to fraction form
    586,581.57/809,482.56 = 318,309.57/x
  3. Step 3: Cross multiply
    586,581.57x = 809,482.56 × 318,309.57
  4. Step 4: Simplify right side
    586,581.57x = 257,666,045,596.10
  5. Step 5: Solve for x
    x = 257,666,045,596.10/586,581.57
  6. Step 6: Final answer
    x = 439,267.20

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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.