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Finding the Fourth Proportional to 586,501.50, 809,376.39 and 318,229.50

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Solution

The fourth proportional to 586,501.50, 809,376.39 and 318,229.50 is: 439,159.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,501.50 : 809,376.39 = 318,229.50 : x
  2. Step 2: Convert to fraction form
    586,501.50/809,376.39 = 318,229.50/x
  3. Step 3: Cross multiply
    586,501.50x = 809,376.39 × 318,229.50
  4. Step 4: Simplify right side
    586,501.50x = 257,567,443,901.51
  5. Step 5: Solve for x
    x = 257,567,443,901.51/586,501.50
  6. Step 6: Final answer
    x = 439,159.05

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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.