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Finding the Fourth Proportional to 585,699.92, 879,268.08 and 386,187.20

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Solution

The fourth proportional to 585,699.92, 879,268.08 and 386,187.20 is: 579,754.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,699.92 : 879,268.08 = 386,187.20 : x
  2. Step 2: Convert to fraction form
    585,699.92/879,268.08 = 386,187.20/x
  3. Step 3: Cross multiply
    585,699.92x = 879,268.08 × 386,187.20
  4. Step 4: Simplify right side
    585,699.92x = 339,562,077,864.58
  5. Step 5: Solve for x
    x = 339,562,077,864.58/585,699.92
  6. Step 6: Final answer
    x = 579,754.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.