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Finding the Fourth Proportional to 586,673.52, 809,587.80 and 318,395.76

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Solution

The fourth proportional to 586,673.52, 809,587.80 and 318,395.76 is: 439,374.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,673.52 : 809,587.80 = 318,395.76 : x
  2. Step 2: Convert to fraction form
    586,673.52/809,587.80 = 318,395.76/x
  3. Step 3: Cross multiply
    586,673.52x = 809,587.80 × 318,395.76
  4. Step 4: Simplify right side
    586,673.52x = 257,769,322,867.73
  5. Step 5: Solve for x
    x = 257,769,322,867.73/586,673.52
  6. Step 6: Final answer
    x = 439,374.39

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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.