Home / 1,210,231,836.30-1,815,095,812.05-520,161,602.70

Finding the Fourth Proportional to 1,210,231,836.30, 1,815,095,812.05 and 520,161,602.70

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Solution

The fourth proportional to 1,210,231,836.30, 1,815,095,812.05 and 520,161,602.70 is: 780,134,118.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,231,836.30 : 1,815,095,812.05 = 520,161,602.70 : x
  2. Step 2: Convert to fraction form
    1,210,231,836.30/1,815,095,812.05 = 520,161,602.70/x
  3. Step 3: Cross multiply
    1,210,231,836.30x = 1,815,095,812.05 × 520,161,602.70
  4. Step 4: Simplify right side
    1,210,231,836.30x = 944,143,146,649,985,920
  5. Step 5: Solve for x
    x = 944,143,146,649,985,920/1,210,231,836.30
  6. Step 6: Final answer
    x = 780,134,118.38

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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.