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Finding the Fourth Proportional to 586,587.41, 809,490.62 and 318,315.41

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Solution

The fourth proportional to 586,587.41, 809,490.62 and 318,315.41 is: 439,275.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,587.41 : 809,490.62 = 318,315.41 : x
  2. Step 2: Convert to fraction form
    586,587.41/809,490.62 = 318,315.41/x
  3. Step 3: Cross multiply
    586,587.41x = 809,490.62 × 318,315.41
  4. Step 4: Simplify right side
    586,587.41x = 257,673,335,958.76
  5. Step 5: Solve for x
    x = 257,673,335,958.76/586,587.41
  6. Step 6: Final answer
    x = 439,275.26

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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.