Home / 530,390.36-731,944.68-288,674.48

Finding the Fourth Proportional to 530,390.36, 731,944.68 and 288,674.48

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Solution

The fourth proportional to 530,390.36, 731,944.68 and 288,674.48 is: 398,374.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,390.36 : 731,944.68 = 288,674.48 : x
  2. Step 2: Convert to fraction form
    530,390.36/731,944.68 = 288,674.48/x
  3. Step 3: Cross multiply
    530,390.36x = 731,944.68 × 288,674.48
  4. Step 4: Simplify right side
    530,390.36x = 211,293,749,887.77
  5. Step 5: Solve for x
    x = 211,293,749,887.77/530,390.36
  6. Step 6: Final answer
    x = 398,374.04

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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.