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Finding the Fourth Proportional to 586,603.93, 809,513.43 and 318,331.93

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Solution

The fourth proportional to 586,603.93, 809,513.43 and 318,331.93 is: 439,298.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,603.93 : 809,513.43 = 318,331.93 : x
  2. Step 2: Convert to fraction form
    586,603.93/809,513.43 = 318,331.93/x
  3. Step 3: Cross multiply
    586,603.93x = 809,513.43 × 318,331.93
  4. Step 4: Simplify right side
    586,603.93x = 257,693,972,532.82
  5. Step 5: Solve for x
    x = 257,693,972,532.82/586,603.93
  6. Step 6: Final answer
    x = 439,298.07

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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.