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Finding the Fourth Proportional to 586,601.50, 809,510.08 and 318,329.50

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Solution

The fourth proportional to 586,601.50, 809,510.08 and 318,329.50 is: 439,294.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,601.50 : 809,510.08 = 318,329.50 : x
  2. Step 2: Convert to fraction form
    586,601.50/809,510.08 = 318,329.50/x
  3. Step 3: Cross multiply
    586,601.50x = 809,510.08 × 318,329.50
  4. Step 4: Simplify right side
    586,601.50x = 257,690,939,011.36
  5. Step 5: Solve for x
    x = 257,690,939,011.36/586,601.50
  6. Step 6: Final answer
    x = 439,294.72

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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.