Home / 515,106,520.40-772,659,780.60-310,529,291.60

Finding the Fourth Proportional to 515,106,520.40, 772,659,780.60 and 310,529,291.60

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Solution

The fourth proportional to 515,106,520.40, 772,659,780.60 and 310,529,291.60 is: 465,793,937.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,106,520.40 : 772,659,780.60 = 310,529,291.60 : x
  2. Step 2: Convert to fraction form
    515,106,520.40/772,659,780.60 = 310,529,291.60/x
  3. Step 3: Cross multiply
    515,106,520.40x = 772,659,780.60 × 310,529,291.60
  4. Step 4: Simplify right side
    515,106,520.40x = 239,933,494,317,529,440
  5. Step 5: Solve for x
    x = 239,933,494,317,529,440/515,106,520.40
  6. Step 6: Final answer
    x = 465,793,937.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.