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Finding the Fourth Proportional to 539,603.17, 744,676.47 and 310,234.86

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Solution

The fourth proportional to 539,603.17, 744,676.47 and 310,234.86 is: 428,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,603.17 : 744,676.47 = 310,234.86 : x
  2. Step 2: Convert to fraction form
    539,603.17/744,676.47 = 310,234.86/x
  3. Step 3: Cross multiply
    539,603.17x = 744,676.47 × 310,234.86
  4. Step 4: Simplify right side
    539,603.17x = 231,024,600,415.74
  5. Step 5: Solve for x
    x = 231,024,600,415.74/539,603.17
  6. Step 6: Final answer
    x = 428,137.96

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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.