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Finding the Fourth Proportional to 530,708.58, 732,390.93 and 289,004.31

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Solution

The fourth proportional to 530,708.58, 732,390.93 and 289,004.31 is: 398,833.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,708.58 : 732,390.93 = 289,004.31 : x
  2. Step 2: Convert to fraction form
    530,708.58/732,390.93 = 289,004.31/x
  3. Step 3: Cross multiply
    530,708.58x = 732,390.93 × 289,004.31
  4. Step 4: Simplify right side
    530,708.58x = 211,664,135,374.91
  5. Step 5: Solve for x
    x = 211,664,135,374.91/530,708.58
  6. Step 6: Final answer
    x = 398,833.08

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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.