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Finding the Fourth Proportional to 586,663, 809,594.94 and 318,391

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Solution

The fourth proportional to 586,663, 809,594.94 and 318,391 is: 439,379.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,663 : 809,594.94 = 318,391 : x
  2. Step 2: Convert to fraction form
    586,663/809,594.94 = 318,391/x
  3. Step 3: Cross multiply
    586,663x = 809,594.94 × 318,391
  4. Step 4: Simplify right side
    586,663x = 257,767,742,541.54
  5. Step 5: Solve for x
    x = 257,767,742,541.54/586,663
  6. Step 6: Final answer
    x = 439,379.58

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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.