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Finding the Fourth Proportional to 586,626, 809,553.60 and 318,354

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Solution

The fourth proportional to 586,626, 809,553.60 and 318,354 is: 439,333.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,626 : 809,553.60 = 318,354 : x
  2. Step 2: Convert to fraction form
    586,626/809,553.60 = 318,354/x
  3. Step 3: Cross multiply
    586,626x = 809,553.60 × 318,354
  4. Step 4: Simplify right side
    586,626x = 257,724,626,774.40
  5. Step 5: Solve for x
    x = 257,724,626,774.40/586,626
  6. Step 6: Final answer
    x = 439,333.79

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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.