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Finding the Fourth Proportional to 586,600.50, 809,508.70 and 318,328.50

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Solution

The fourth proportional to 586,600.50, 809,508.70 and 318,328.50 is: 439,293.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,600.50 : 809,508.70 = 318,328.50 : x
  2. Step 2: Convert to fraction form
    586,600.50/809,508.70 = 318,328.50/x
  3. Step 3: Cross multiply
    586,600.50x = 809,508.70 × 318,328.50
  4. Step 4: Simplify right side
    586,600.50x = 257,689,690,207.95
  5. Step 5: Solve for x
    x = 257,689,690,207.95/586,600.50
  6. Step 6: Final answer
    x = 439,293.34

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1.5x scale

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.