Home / 529,827.98-731,140.38-300,400.70

Finding the Fourth Proportional to 529,827.98, 731,140.38 and 300,400.70

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Solution

The fourth proportional to 529,827.98, 731,140.38 and 300,400.70 is: 414,540.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,827.98 : 731,140.38 = 300,400.70 : x
  2. Step 2: Convert to fraction form
    529,827.98/731,140.38 = 300,400.70/x
  3. Step 3: Cross multiply
    529,827.98x = 731,140.38 × 300,400.70
  4. Step 4: Simplify right side
    529,827.98x = 219,635,081,950.27
  5. Step 5: Solve for x
    x = 219,635,081,950.27/529,827.98
  6. Step 6: Final answer
    x = 414,540.36

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1.5x scale

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.