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Finding the Fourth Proportional to 530,778.60, 732,534.99 and 315,919.35

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Solution

The fourth proportional to 530,778.60, 732,534.99 and 315,919.35 is: 436,004.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,778.60 : 732,534.99 = 315,919.35 : x
  2. Step 2: Convert to fraction form
    530,778.60/732,534.99 = 315,919.35/x
  3. Step 3: Cross multiply
    530,778.60x = 732,534.99 × 315,919.35
  4. Step 4: Simplify right side
    530,778.60x = 231,421,977,893.06
  5. Step 5: Solve for x
    x = 231,421,977,893.06/530,778.60
  6. Step 6: Final answer
    x = 436,004.73

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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.