Home / 261,621,372.76-392,489,520.66-77,374,484.53

Finding the Fourth Proportional to 261,621,372.76, 392,489,520.66 and 77,374,484.53

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Solution

The fourth proportional to 261,621,372.76, 392,489,520.66 and 77,374,484.53 is: 116,078,721.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,621,372.76 : 392,489,520.66 = 77,374,484.53 : x
  2. Step 2: Convert to fraction form
    261,621,372.76/392,489,520.66 = 77,374,484.53/x
  3. Step 3: Cross multiply
    261,621,372.76x = 392,489,520.66 × 77,374,484.53
  4. Step 4: Simplify right side
    261,621,372.76x = 30,368,674,344,494,288
  5. Step 5: Solve for x
    x = 30,368,674,344,494,288/261,621,372.76
  6. Step 6: Final answer
    x = 116,078,721.03

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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.