Home / 515,041,800.12-772,903,029.78-242,490,511.80

Finding the Fourth Proportional to 515,041,800.12, 772,903,029.78 and 242,490,511.80

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Solution

The fourth proportional to 515,041,800.12, 772,903,029.78 and 242,490,511.80 is: 363,896,000.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,041,800.12 : 772,903,029.78 = 242,490,511.80 : x
  2. Step 2: Convert to fraction form
    515,041,800.12/772,903,029.78 = 242,490,511.80/x
  3. Step 3: Cross multiply
    515,041,800.12x = 772,903,029.78 × 242,490,511.80
  4. Step 4: Simplify right side
    515,041,800.12x = 187,421,651,263,122,848
  5. Step 5: Solve for x
    x = 187,421,651,263,122,848/515,041,800.12
  6. Step 6: Final answer
    x = 363,896,000.71

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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.