Home / 530,394.31-731,944.10-288,678.61

Finding the Fourth Proportional to 530,394.31, 731,944.10 and 288,678.61

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Solution

The fourth proportional to 530,394.31, 731,944.10 and 288,678.61 is: 398,376.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,394.31 : 731,944.10 = 288,678.61 : x
  2. Step 2: Convert to fraction form
    530,394.31/731,944.10 = 288,678.61/x
  3. Step 3: Cross multiply
    530,394.31x = 731,944.10 × 288,678.61
  4. Step 4: Simplify right side
    530,394.31x = 211,296,605,385.70
  5. Step 5: Solve for x
    x = 211,296,605,385.70/530,394.31
  6. Step 6: Final answer
    x = 398,376.46

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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.